lemon/pairing_heap.h
2009-07-10 Small improvements in heap implementations (#301)
2009-07-09 Improve and unify the doc + names in the new heaps (#301)
2009-07-09 Bug fix in PairingHeap::pop() (#301)
2009-07-09 Add fourary, k-ary, pairing and binomial heaps (#301)