removed edge package to be replaced with Edge package with updated .java files
Added new extensivecomments in HalfEdge.java
Documented DList and DListNode extensively. Added new test cases. Cleaned up code
Improved DebugLib for higher purposes
Added javadocs to Vertex (Not complete), improved code, and added test cases
Greatly shortened GraphHashTables. Tested extensively especially for new key and value implementation. Improved code and documented extensively.
Made minor changes in WUG. Nothing major.