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

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

Substitutions for space character

White space fixes

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

Redraw ligature list after sorting it

Fix memory leak

Debug memory leak

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

Process contextual ligatures in kerning and spacing tabs

Process contextual ligatures before common ligatures

Add contextual ligatures to the bf font format

Write the context for contextual substitutions (ligatures)

Merge branch 'master' of gitorious.org:birdfont/birdfont

Platform independent text input

Thread safety in text rendering

Merge branch 'master' of gitorious.org:birdfont/birdfont

Conflicts:
	libbirdfont/BirdFontFile.vala

Calculate max extent

Add contextual ligatures to the GUI and fix directory privileges

Merge branch 'master' of gitorious.org:birdfont/birdfont

Update table when ligature is updated

Use unicode sequences in ligature tab
Allow the font designer to enter values on the form U+XX where
XX is the unicode value in hex.

Add ligature input

Add abstract table class

Write and parse ligature subsitutions in GPOS table