Fixed a long-standing bug in adjacency list loading code ([] operator for vectors cannot be used for insertion). The id-key mappings for nodes are now identity functions in case the mappings are not defined (so that the functions return meaningful result for graphs not constructed from adjacency list format).
Merge branch 'master' of http://github.com/stanford-ppl/Green-Marl
Added support for min/max
Merge branch 'master' of https://github.com/stanford-ppl/Green-Marl