added equalsWithType

This method allows you to compare two WMEs with a specified set of their
components
Renamed from Word.java

Entry is a more general term.  We don't want to be committed (ha ha!) to
using words as components episodes.
Added comment header, changed "Word" to "Entry"

The Word class was renamed to Entry so this file reflects that.
Continued work on Dictionary and its unit test

- added comment header
- fixed bugs caused by switch from Word to Entry
- started a unit test for the constructor
Merge branch 'master' of https://github.com/amnuxoll/EpMemHashing.git