Use new style classes
Even cleaner way to do set equality.
Added myself to authors, added SeqBase repr.
Merge pull request #23 from aisipos/master

Use new style classes.
Merge pull request #24 from smcq/master

Making the tests actually test things
add cover to gitignore
Merge pull request #25 from DeadWisdom/master

Added a SeqBase __repr__; Added myself to AUTHORS
Change gen.next() to next(gen)
import StringIO from io
Improved lilypond tests
Make sure modifiers returns an int
Fixing string encoding issues for Python 3
Add six to install_requires