Finished and tested clustering coefficient functions.
Merge branch 'graph-creation' of https://github.com/j-coll/common-libs into graph-creation

Conflicts:
	containers/graph.c
	containers/test/graph_test.c
RE-Merge branch 'graph-creation' of https://github.com/j-coll/common-libs into graph-creation

The first merge was incorrect.
Conflicts:
	containers/graph.c
	containers/test/graph_test.c
Merge branch 'graph-creation' of github.com:jmmut/common-libs into graph-creation
Added graph_get_bipartiteness and tested.
Implemented and tested dot input parser
Merge branch 'graph-creation' of https://github.com/jmmut/common-libs into graph-creation