* moving heterograph index to another file
* node view
* python interfaces
* heterograph init
* bug fixes
* docstring for readonly
* more docstring
* unit tests & lint
* oops
* oops x2
* removed node/edge addition
* addressed comments
* lint
* rw on frames with one node/edge type
* homograph with underlying heterograph demo
* view is not necessary
* bugfix
* replace
* scheduler, builtins not working yet
* moving bipartite.h to header
* moving back bipartite to bipartite.h
* oops
* asbits and copyto for bipartite
* tested update_all and send_and_recv
* lightweight node & edge type retrieval
* oops
* sorry
* removing obsolete code
* oops
* lint
* various bug fixes & more tests
* UDF tests
* multiple type number_of_nodes and number_of_edges
* docstring fixes
* more tests
* going for dict in initialization
* lint
* updated api as per discussions
* lint
* bug
* bugfix
* moving back bipartite impl to cc
* note on views
* fix