Chordbook

* Fix bug with 'composer' attribute

* Allow 'N/C' in chord progressions with transpose

* Allow '..' and '//' in chord progressions

* Fix problem with empty string arriving in do_transpose
* Improve inline note handling with css

* Add support for '%' to denote repeat bars
* Output now sorts tunes by name regardless of input sort order
* Improved composer / credit handling
* HTML output now includes composer / credit if present
* Added support for (+) to denote coda symbol
* Added support for inline annotations using [, ] and _ for spaces
* Fixed seven bars on a line bug

* Fixed bug where time signatures were being transposed
* Fixed bug where slash bass chords weren't being transposed