Refactoring

OTF offer

Merge branch 'master' of github.com:johanmattssonm/birdfont

Merge branch 'master' of github.com:johanmattssonm/birdfont

Merge ../birdfont-2.x

Remove debugging messages

Merge branch '2.x' of github.com:johanmattssonm/birdfont into 2.x

Merge ../birdfont-2.x

Display error message when a glyph has too many points

Merge branch '2.x' of github.com:johanmattssonm/birdfont into 2.x
Version 2.16.12

Merge ../birdfont-2.x

Scrollbar

Merge branch '2.x' of github.com:johanmattssonm/birdfont into 2.x

Merge ../birdfont-2.x

Fix overview search and alternates

Merge ../birdfont-2.x

Add glyph tab to tab bar instead of raw glyph

Merge ../birdfont-2.x

Update glyph tab when glyphs are changed in overview

Merge branch 'master' of github.com:johanmattssonm/birdfont

Merge branch '2.15'

Add a box for short help texts

Faster rendering of fallback fonts in the overview tab

Merge branch 'master' of github.com:johanmattssonm/birdfont

Speed optimizations for the overview tab

This is done by caching labels and creating an array that stores the
length entire lenght of the set at all unicode ranges in GlyphRange.

The current version runs in a single thread but some work has been done
in order to render overview glyphs in a background thread.