Update to 0.83:

2015-08-21 (Paul Sladen) Ubuntu Font Family version 0.83

  Note: This release was created by binary patching from the v0.80
  release using the scripts in 'sources/patch-0.80-0.83/' to rebuild
  the necessary tables. The release selectively updates only those
  proportional .ttf font files exhibiting the bug below bug number;
  the Ubuntu Mono monospace font files remain unchanged, being the
  original version 0.80 ones.

  [Marc Foley]
  * [Engineering] Fixed wrong characters appear in some mac apps. (LP: #1334363)

(wiz)