Java serialization tests passing.
GraphML tinkergraph tests passing.

This actually was weird because it had a bit of a false positive in passing.
Added todo for improving tests
Minor refactoring.
GML tests running.

Changed the default GML reader methods to match the defaults set by the GML writer so that they would be in sync for reading and writing to each other in default modes.
Minor refactoring.
Merge pull request #1 from spmallette/master

Tests Passing