Revert "Outline class private instance variables I expect to need"

This reverts commit 93389d4aacb73278e087f35ca9095610db0707bb.

Conflicts:
	wordnet/WordNet.java
Revert "Switch to HashMap implem. of synsets and write parser/builder"

This reverts commit 3919c3d61becbe224892c9a2701ead746a998e2f.

Conflicts:
	wordnet/WordNet.java
Revert "Write hypernyms/graph parser"

This reverts commit 8b6af94dcdabeaedfbb2f4920b2af0786dcdbbd6.
Revert "Add implementation of WordNet iterator"

This reverts commit b2bea88a6659ae990cdb50996d298ebf59405e6b.
Revert "Outline constructor subroutines I expect to need"

This reverts commit a2e3ef5a8f2a2e1a16252b92ef45ffd273bd97be.
Implement WordNet data type as assigned.