2008-02-08 Version 0.7 released

	New Features

		+ new data structures

			* classes

				StaticGraph

				ExtendFindEnum

				BfsVisitor class

					Bipartite partitions based on visitors

			* helper class for checking existence of a nested class

			* general mapping based variant type

			* IntegerMap

		+ new algoritmhs

			* Lagrange relaxation based algorithm for the delay constrained least cost path problem

			* a preflow based general network circulation algorithm

			* 2-approximation of Steiner-tree problem

			* two heuristics for minimum cut algorithms

			  (http://www.avglab.com/andrew/pub/neci-tr-96-132.ps)

			* Gomory-Hu tree algorithm

			* Edmond's Blossom shrinking algorithm

			* minimum mean cycle algorithm

			* Goldberg-Tarjan algorithm (Preflow with Dynamic Trees)

			* Dinitz-Sleator-Tarjan (Blocking flow with Dynamic Tree)

			* min cost flow algorithms:

				* successive shortest path algorithm

				* capacity scaling algorithm

				* simple cycle canceling algorithm

				* minimum mean cycle canceling algorithm

				* cost scaling algorithm

				* network simplex algorithm

			* min cost maximum flow algorithm

		+ new functions and tools

			* ArgParser, a command line argument parser

			* DistLog, a tool for measuring one and two dimensional distributions

			* undirected minimum cut benchmarking

			* tools/lgf-gen.cc, a random graph generator

			* BpUGraphReader and Writer

			* DynEdgeLookUp implementation based on splay trees

			* MACROS for debug map usage

		+ new distributions (Gaussian, exponential, Gamma, two dimensional random, buffered bit generation)

		+ push-relabel type algorithm related additions

			* Elevator, a class for handling item labels in push-relabel type algorithms

			* a push/relabel type max cardinality matching implementation

			* some query function for push-relabel based matching

		+ LP related additions

			* Soplex support

			* ColIt class

			* new functions (simplify(), isFinite(), row and col getter function)

			* _setColCoeff and _setRowCoeff parameters

			* section reader and writer for LEMON IO

			* equality-type constraint can now be added to a LP

			* virtual functions of class LpCplex

			* some query functions for GLPK

		+ demos

			* preflow based general network circulation demo

			* Steiner 2-approximation demo

			* demo for SAT problems

			* sample input for sat-2 and sat demos

		+ tests for

			* graph copies

			* random.h

			* max weighted matchings

		+ planarity related additions

			* checking and embedding

			* planar grid embedding

			* planar graph coloring

		+ bipartite matchings

			* common interface

			* Query functions: aMatching and bMatching

			* ANodeMap<UEdge> matching map

			* BNodeMap<bool> barrier map

	Repository reorganization

		* script for automatic checking of SVN commit's consistency

		* automatic doc generation from the SVN trunk

		* check for gcc version 3.3, 3.4, 4.0 and 4.1.2 as well

		* reorganization of the modules and groups

		* a tools directory added for useful executables codes

		* doxygen

			* renaming topology doxygen group to graph_prop doxygen group

			* introducing planar doxygen group

	Changes

		*  redesigned

			* undirected edgesets (like the smart graph or ugraph)

			* interface of MaxMatching and UnionFindEnum

			* interface of maximum flow algorithms

			* Kruskal algorithm

			* augmenting path based bipartite matching

	Improvements

		* graph copy

			* preliminary support for static graphs

			* added BpUGraphCopy

		* Bfs/Dfs/Dijkstra

			* conditional execution until the target is reached 

			* modified start() function in Dfs and Dijkstra classes to give back reached edge/node

			* return the temporary distance of the current node

			* using operation traits in Dijkstra

			* patch for retrieving reached/processed node

		* prescaling can be turned off in GraphToEps

		* better handling of inexact computations

		* easier inverse

		* faster geometric minimum spanning tree algorithm

		* new implementation of undirected graphs

		* Hao-Orlin algorithm became epsilon-safe

		* LpSoplex

			* added getter functions

			* better m4 file

			* better handling of unsolved lps

		* allowing 'string' type quoting for item reading and writing

		* clear() function for union-find structures

		* hacking MIP is possible without integer variables

		* space reservation for SmartGraph

		* path

			* PathNodeIt

				PathWriter/Reader structures

				Distinct MapSet readers and writers

			* more simple interface for PathDumper

	Updated

		* tutorial for

			* algorithms

			* graph visualization

		* documentation

	Backward incompatibilities/changed namings

		* min_cut.h => nagamochi_ibaraki.h

		* clone => build

		* RevIt => RevEdgeIt

		* _FixId => LpId

		* setObj => obj

		* is_min => isMin

		* is_max => isMax

		* ball2() => disc()

		* state_enum => State

		* getNotifier => notifier

		* using LEMON_ASSERT instead of LogicError()

		* uedgeset is an alias for edgeset

		* CPXMIP_OPTIMAL_TOL status is considered as OPTIMAL too

		* removed "Type" suffix from typedefs

		* lower case local variables

	Removed

		- template Map template parameter from InvertableMaps

		- union-find Item template parameter

		- strict checking

		- some automatic callback generation 

		- '-Wshadow' seemed too strict therefore removed

	Several bugfixes

2006-10-31  Version 0.6 Released

	GLEMON has moved to a separate repository

		(https://hugo.cs.elte.hu/svn/glemon/trunk)

	New Features

		+ Mixed Integer Programming (MIP) support

		+ interface to GLPK and CPLEX MIP solvers

		+ Data structures

			* Bipatrite graph concepts and implementations

			* a Polinomial template class

			* RefPtr: a reference counted pointer class

			* SimpleBucketHeap  

		+ random.h: Mersenne Twister random number generator

		+ EdgeLookUp and AllEdgeLookUp

		+ Tools to find edges between to nodes in time O(log d) 

		+ new matching algorithms

		+ Bipartite Graph Max Cardinality Matching (Hopcroft-Karp)

		+ MaxWeightedBipartiteMatching

		+ MinCostMaxBipartiteMatching

		+ MaxCardinalitySearch

		+ MinimalCut in UGraph

		+ Tabu Search framework 

		+ Minimum Cost Arborescence algorithm 

		+ Edmonds-Karp MaxFlow

		+ Hao-Orlin algorithm

		+ eps.h: A simple tool to create .eps pictures.

	Backward incompatibilities/changed namings:

		* UndirXyz -> UXyz

		* UNDIRGRAPH_TYPEDEFS -> UGRAPH_TYPEDEFS

		* GridGraph -> GridUGraph

		* LinearHeap -> BucketHeap

		* ColorSet -> Palette

		* xy -> dim2::Point

		* DirPath -> Path

		* concept -> concepts (namespace & directory)

		* LpSolverBase

			* ColName() -> colName

			* Coeff() -> coeff()

		* MinCostFlow -> SspMinCostFlow

	Repository reorganization:

		* compilation is conducted by a single makefile

		* internal building blocks are now in a separate directory

		(lemon/bits)

	Major improvements of many algorithms and data structures

	Several bugfixes

	Compatibility issues:

		* known to compile with

			* GCC 3.3, 3.4, 4.0, 4.1 

			* MinGW, MinGW32

			* Intel C++ 9.x support

2006-02-03  Version 0.5 Released

	New features

		+ Shortest paths algorithms

			* bellman_ford.h

			* floyd_warshall.h

			* johnson.h

		+ Euler tour iterator for directed and undirected graphs

		+ Other algorithms:

			* dag_shortest_path.h

			* fredman_tarjan.h and prim.h for min cost trees

		+ Bipartite graph concept and implementations

		+ Graph maps:

			* template assign operator

			* specialized iterable bool map

			* potential difference map

			* NodeMatrixMap -- Matrix over the nodes

		+ Maps:

			* IterableIntMap

		+ Tools:

			* Timer can be stop()ed and (re)start()ed

			* radix sort algorithm

			* tolerance.h for working with imprecise numbers

	New demos, benchmarks and tools

		+ graph_orientation.cc: A thoroughly documented demo application

		+ runningTimeTest(): a tool to measure running times more precisely

		+ Demo for topology

		+ counter.h: a tool to measure the number of steps of algorithms

		+ Some useful scripts: check-compiler, check-integrity

	Improvements

		+ Bfs/Dfs/Dijkstra

			* query functions for the next node/edge to be processed

			* visitor interface for dfs

		+ topology.h: small functions for discovering graph topology

			* connected components, strongly connected components

			* bipartiteness testing

		+ GUI:

			* NewMap window in MapSelector

			* Algorithm window and some algorithms (eg. Kruskal) added

		+ LemonReader:

			* exception on non-existent files

		+ LP interface:

			* (Dual)Expr::simplify(double tolerance) added

			* getDual()

		+ GraphToEps:

			* negateY() opt

			* male/female node shapes :)

			* correct BoundingBox handling

	Backward incompatibilities/changed namings:

		* Access functions of TimeStamp/Timer

		* Undirected graph interface: findUEdge, ConUEdgeIt

		* pred -> predEdge renaming in search algorithms

		* SnapShot -> Snapshot in {List,Smart}Graph

		* NewEdgeSetAdaptor -> ListEdgeSet

		* LP: set{Obj,Row,Col}() -> {obj,row,col}()

		* "label" instead of "id" inside the LGF files

		* UndirGraph -> UGraph, UndirEdge* -> UEdge*

		* BipartiteGraph -> BpGraph, Lower/UpperNode* -> A/BNode*

	Bugfixes in

		* DFS

		* Preflow

		* x86_64 connected bugfixes (lemon_reader.h)

		* lp.h

	Other changes

		* Demos and benchmarks are not built by default now. They can be

			* enabled with the --enable-demo and --enable-benchmark

			* configure flags.

		* GCC 4.0.3 and ICC 9.0 compatibility

2005-08-27  Version 0.4 Released

	New features

		+ More and better graph I/O functionalities

		+ High level uniform LP solver interface to CPLEX and GLKP

		+ New map adaptors

		+ New convenience maps

			* IdMap, DescriptorMap

			* InDegMap, OutDegMap

			* XMap, YMap

		+ Default graph maps are iterable

		+ glemon: a graph editor

		+ Some new demo codes added, the old ones got polished.

	Improvements

		+ graphToEps()

			* Automatic node size and edge width scaling

			* Simple color palette tool (ColorSet)

		+ Bfs/Dfs/Dijkstra

			* Step-by-step execution

			* Run from multiple sources

			* Used define stop condition

			* Improved "named parameters"

		+ Preflow

			* Changed interface

			* Function type interface

		+ ListGraph/SmartGraph

			* split() splits a node

			* SnapShot

	Changes

		* Changed namings:

			* Wrapper -> Adaptor

			* kruskalEdgeMap() -> kruskal()

			* kruskalEdgeMap_IteratorOut() -> kruskal()

		* BoundingBox<>

			* operator+=() -> add()

			+ clear()

		* Better documentation

		* Several important bugfixes

		* Now LEMON should compile without warnings with

			* gcc 3.3, 3.4, 4.0

			* Intel C++ Compiler v9.0 

2005-03-19  Version 0.3.1 Released

	This release fixes a compilation failure bug under cygwin. 

2005-02-21  Version 0.3 released

	New features

		+ Standardized LEMON exceptions

		+ Undirected Graph

		+ Standard graph file format, input and output classes for it

		+ GraphToEps: A simple graph drawer

	Changes

		* Redesigned Graph infrastructures

		* head() -> target(), tail() -> source()

		* Some standard namings have changes:

			ValueType -> Value, 

			KeyType -> Key,

			ReferenceType -> Reference,

			PointerType -> Pointer

		* Better documentation

2004-09-30  Version 0.2 released