Minor latin tweaks, added Deva half forms

- includes some revisions to the Latin
- added फ, ष, rrvocalic-deva and a handful of letter + nukta forms.
- added 29 half forms
- Indesign proofs are moving to Indesign CC 2014 format
- mixer.py is a program for dumping text files of permutations. Note
that it is intended to be edited on the fly and run in dropbox and is
NOT a standalone application.