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

Merge pull request #132 from boen1977/wrncleanup

Remove compiler warnings: `GLib.Thread.create'

Fix misc compiler warning.

Fix bad text rendering

Fix warnings

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

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

Rename text rendering directory

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

Remove unused variables

Fix offsets in text rendering, release freetype resources on error and
switch themes.

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

Faster rendering of fallback fonts in the overview tab

Fix alignment of fonts to pixel grid

Display key bindings in menu and show scroll bar in file dialog

Don't put overview glyphs in cache
The cache does become large and it slows down rendering.

Draw glyphs with negative lsb

Fix text alignment to pixel grid

Faster text and icon rendering

This commit makes switching tools many times faster.

White space fixes

Fix hide layer icon

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

Clear glyph cache when spacing is updated

High resolution rendering of text and graphics
This commit fixes retina display issues.

Fix text rendering
Store font size for each glyph loaded from a fallback font. (Animated case bug)