| #146 | 
                    
                      Cheap copy of maps (reference counting) PHASE II.
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      blocker
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #633 | 
                    
                      Fixes fox gcc 9
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      blocker
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #59 | 
                    
                      Port the remaining spanning tree algorithms
                     | 
                    
                      new
                     | 
                    
                      task
                     | 
                    
                      critical
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #168 | 
                    
                      Port bipartite matching algorithms
                     | 
                    
                      new
                     | 
                    
                      task
                     | 
                    
                      critical
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #227 | 
                    
                      Command line tool for executing various algorithms
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      critical
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #346 | 
                    
                      Port the remaining shortest path algorithms
                     | 
                    
                      new
                     | 
                    
                      task
                     | 
                    
                      critical
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #680 | 
                    
                      Fix C++17 compilation warnings regarding the use of the deprecated std::iterator.
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      critical
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #6 | 
                    
                      VGraph and VMap
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #33 | 
                    
                      Benchmarking
                     | 
                    
                      new
                     | 
                    
                      task
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #64 | 
                    
                      Port constrained shortest path algorithm
                     | 
                    
                      assigned
                     | 
                    
                      task
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #70 | 
                    
                      Port VirtualMaps
                     | 
                    
                      assigned
                     | 
                    
                      task
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #73 | 
                    
                      Port the remaining miscellaneous tools
                     | 
                    
                      assigned
                     | 
                    
                      task
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #76 | 
                    
                      New features for graphToEps()
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #85 | 
                    
                      Use eps.h for drawing in graphToEps()
                     | 
                    
                      new
                     | 
                    
                      task
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #86 | 
                    
                      Virtualmap based graphToEps().
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #94 | 
                    
                      Easy erase in list graphs
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #105 | 
                    
                      Consider using the "ziggurat" method in Random::gauss().
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #220 | 
                    
                      Implement a Dual Network Simplex algorithm
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #222 | 
                    
                      Network Simplex alg. for a simplified problem
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #225 | 
                    
                      Binary graph file format
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #237 | 
                    
                      Line graph implementations
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #238 | 
                    
                      Min cut iterators in Preflow
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #246 | 
                    
                      s() and t() as an alias for source() and target()
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #251 | 
                    
                      More efficient graph copying
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #269 | 
                    
                      Function type interface for Circulation
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #271 | 
                    
                      Provide output  in dimacs-solver
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #284 | 
                    
                      LGF to EPS converter tool
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      tools
                     | 
              
              
                    | #287 | 
                    
                      Specify argument order for ArgParser
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #297 | 
                    
                      Graph and map serializer
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #300 | 
                    
                      Faster building of heaps
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #313 | 
                    
                      Revise the implementation of  PairingHeap and RadixHeap
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #329 | 
                    
                      Sort outgoing arcs in the build() function of StaticDigraph
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #344 | 
                    
                      Cairo based version of graphToEps()
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #345 | 
                    
                      Obtaining and storing the LP solution
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #355 | 
                    
                      SCIP MipSolver backend
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #357 | 
                    
                      Guidelines for run/init/start
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      documentation
                     | 
              
              
                    | #367 | 
                    
                      Gurobi backend for the LP interface
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #370 | 
                    
                      Edge coloring algorithms
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #373 | 
                    
                      Compile time assertion
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #374 | 
                    
                      Functions for weakly connected components
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #378 | 
                    
                      Transitive closure
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #379 | 
                    
                      Find odd cycles
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #381 | 
                    
                      Simplified heaps without priority update
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #385 | 
                    
                      QuadHeap instead of BinHeap in Dijkstra
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #394 | 
                    
                      Add supprt for lp_solve
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #399 | 
                    
                      Missing getter and streaming operator for Node/Arc id
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #400 | 
                    
                      MPL LpSolver/MipSolver backend
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #402 | 
                    
                      Maps don't initialize subseqnetly added graph elements to the map-constructor's initial value.
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #409 | 
                    
                      Extend unionfind_test.cc
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #412 | 
                    
                      Implement Dinitz algorithm for the max flow problem
                     | 
                    
                      new
                     | 
                    
                      task
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #413 | 
                    
                      Implement Young-Tarjan-Orlin algorithm for min mean cycle
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #415 | 
                    
                      Custom cost types in NetworkSimplex
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #421 | 
                    
                      Better DAG test and topological ordering implementation
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #426 | 
                    
                      Expose CBC/CPL original interface in CbcMip and ClpLp
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #427 | 
                    
                      Create build() routine for StaticDigraph that allows # of arcs to be set explicitly
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #431 | 
                    
                      Remember the lastly evaluated arcs in Circulation (and in Preflow)
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #451 | 
                    
                      Functionality to test graph data structure consistency
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #462 | 
                    
                      Extended run time checking in debug mode
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #466 | 
                    
                      Extended std::vector<>
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #475 | 
                    
                      DigraphWriter<> always saves Arc label
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #594 | 
                    
                      STL syle iterators - phase II.
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #597 | 
                    
                      VF2 (sub)graph isomoprism algorithm
                     | 
                    
                      reopened
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #616 | 
                    
                      Current version 1.3.1 Incompatible with SoPlex-4.0.0
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #621 | 
                    
                      Lemon and Boost: call of overloaded ‘ignore_unused_variable_warning(...)’ is ambiguous
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #622 | 
                    
                      unused variable in elevator.h
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #625 | 
                    
                      lemon preflow algorithm init with flowmap failed because of excess < 0
                     | 
                    
                      reopened
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #626 | 
                    
                      Bug in CBC ProblemType determination
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #628 | 
                    
                      make find package failed
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #631 | 
                    
                      Lemon c++20 compatibility patch
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #646 | 
                    
                      Bug in binomial heap with ties
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #650 | 
                    
                      MaxWeightedPerfectMatching fails for some graphs
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #656 | 
                    
                      migrate to github
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #660 | 
                    
                      Drop support for C++98
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #668 | 
                    
                      Crash in lgf_reader_writer_test
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #669 | 
                    
                      Mailing lists no longer work
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #672 | 
                    
                      Bug in the Vf2 implementations
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #681 | 
                    
                      Bug in radix heap
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #682 | 
                    
                      Fix access of private members in Vf2 and Vf2++, and improve tests
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #683 | 
                    
                      Dangling references in lgf_reader_writer_test.cc
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      major
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #8 | 
                    
                      GraphToEps() doesn't show loop egdes
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #77 | 
                    
                      Added functionality to nodePsTexts() named param. of graphToEps().
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #78 | 
                    
                      Added functionality to graphToEps().
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #139 | 
                    
                      Support short and long style parameters in ArgParser
                     | 
                    
                      assigned
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #235 | 
                    
                      Push-relabel max flow (Preflow) for undirected graphs
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #338 | 
                    
                      Infinite capacities in Preflow
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      core
                     | 
              
              
                    | #358 | 
                    
                      Runtime complexity for every algorithm
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                     | 
                    
                      documentation
                     | 
              
              
                    | #452 | 
                    
                      time_measure.h uses obsolete headears
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      minor
                     | 
                    
                      LEMON 1.5 release
                     | 
                    
                      core
                     | 
              
              
                    | #618 | 
                    
                      Constrained time measure
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #620 | 
                    
                      Infinite loop in Nagamochi-Ibaraki with floating-point capacities
                     | 
                    
                      new
                     | 
                    
                      defect
                     | 
                    
                      minor
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     | 
              
              
                    | #658 | 
                    
                      CMake Rework
                     | 
                    
                      new
                     | 
                    
                      enhancement
                     | 
                    
                      minor
                     | 
                    
                      LEMON 1.4 release
                     | 
                    
                      core
                     |