Words no longer have anything except lemmas, add_sequence supports adding words.
Removed comment in document parser
Updated sequence processor to work with lemma-only words
String processor now creates words with only lemmas
Fixed unit tests
Merge pull request #201 from Wordseer/fixed-words

Fixed words
Merge branch 'development' of github.com:Wordseer/wordseer_flask into project-scoped-preprocessor

Conflicts:
	app/preprocessor/sequenceprocessor.py