Chanjo

Added
- Read sample ID from BAM header
- Validate BED format in "annotate"
- Enable getting config values from "chanjo.toml" (``chanjo config annotate.cutoff``)

Fixed
- Fix issue with hardlinks in Vagrant shared folders (setup.py)
- Change Travis CI setup using official guidelines
- Fix typography in docs
- Use io.open instead of codecs.open
- Use .sqlite3 extension for SQLite databases
- Better error message when overwriting existing databases

Fixed
- Fix misstake in "import" subcommand so it's finally working!

Fixed
- Fix bug in "import" where the program didn't flush the session before committing.
- Change "build_interval_data" to only create model without adding to the session.
- Use "scoped_session" with "sessionmaker".
- Flush session before each commit call in ``chanjo.Store.save()``

Fixed
- Fix interval assertion that didn't allow intervals to start and end on the same chromosomal position.

Added
- Add lazy loading of ``chanjo.Store` through new ``chanjo.Store.connect` method
- Much improved documentation of changes between releases

Fixed
- Fix case where "demo" subcommand fails (``__package__` not set)

Fixed
- Rename misspelled method (non-breaking): ``chanjo.Store.tare_down` to ``chanjo.Store.tear_down`

Fixed
- Fix some CSS selectors in theme
- Reorder API references in API docs