Fix issue with pre-note vspace
Make example dance `cards' a bit bigger
Add Kalia Kliban to the special thanks section
Make \prenotevspace a length not a normal macro
Move class options description around a bit
Add roll away, sashay, rawhs, and turns

See #17
Add John Sweeney to the special thanks section
Add ability to get info about previous dance

Fixes #22
Add class description
Add long lines move shortcut

See #17
Add draft option to class