Implement code ligatures :)

ligatures for:
<-, ->, =>, >>, <<, >>=, =<<, .., …, ::, -<, >-, -<<, >>-, ++, /= and ==

Author: Ian Tuomi

.gitignore

@@ -13,3 +13,7 @@ Roman/Regular/SourceCodePro-Regular.otf
 Roman/Regular/SourceCodePro-Regular.ttf
 Roman/Semibold/SourceCodePro-Semibold.otf
 Roman/Semibold/SourceCodePro-Semibold.ttf
+
+*.vfbak
+
+*.tmp

FontMenuNameDB

@@ -1 +1 @@
-# [PostScriptName]# 	f=FamilyName# 	s=StyleName# 	l=Windows_Compatible_MenuName# 	m=1,Macintosh_Compatible_MenuName[SourceCodePro-ExtraLight]	f=Source Code Pro	s=ExtraLight	l=Source Code Pro ExtraLight	m=1,Source Code Pro ExtraLight[SourceCodePro-Light]	f=Source Code Pro	s=Light	l=Source Code Pro Light	m=1,Source Code Pro Light[SourceCodePro-Regular]	f=Source Code Pro	s=Regular	l=Source Code Pro	m=1,Source Code Pro[SourceCodePro-Medium]	f=Source Code Pro	s=Medium	l=Source Code Pro Medium	m=1,Source Code Pro Medium[SourceCodePro-Semibold]	f=Source Code Pro	s=Semibold	l=Source Code Pro Semibold	m=1,Source Code Pro Semibold[SourceCodePro-Bold]	f=Source Code Pro	s=Bold	l=Source Code Pro	m=1,Source Code Pro Bold	[SourceCodePro-Black]	f=Source Code Pro	s=Black	l=Source Code Pro Black	m=1,Source Code Pro Black
+# [PostScriptName]# 	f=FamilyName# 	s=StyleName# 	l=Windows_Compatible_MenuName# 	m=1,Macintosh_Compatible_MenuName[SourceCodeProL-ExtraLight]	f=Source Code Pro L	s=ExtraLight	l=Source Code Pro L ExtraLight	m=1,Source Code Pro L ExtraLight[SourceCodeProL-Light]	f=Source Code Pro L	s=Light	l=Source Code Pro L Light	m=1,Source Code Pro L Light[SourceCodeProL-Regular]	f=Source Code Pro L	s=Regular	l=Source Code Pro L	m=1,Source Code Pro L[SourceCodeProL-Medium]	f=Source Code Pro L	s=Medium	l=Source Code Pro L Medium	m=1,Source Code Pro L Medium[SourceCodeProL-Semibold]	f=Source Code Pro L	s=Semibold	l=Source Code Pro L Semibold	m=1,Source Code Pro L Semibold[SourceCodeProL-Bold]	f=Source Code Pro L	s=Bold	l=Source Code Pro L	m=1,Source Code Pro L Bold	[SourceCodeProL-Black]	f=Source Code Pro L	s=Black	l=Source Code Pro L Black	m=1,Source Code Pro L Black

GlyphOrderAndAliasDB

@@ -961,3 +961,20 @@ uni259C	upleftuprightdnrightquadrant
 uni259D	uprightquadrant
 uni259E	uprightdnleftquadrant
 uni259F	uprightdnleftdnrightquadrant
+hyphen_greater hyphen_greater
+less_hyphen less_hyphen
+equal_greater equal_greater
+hyphen_less hyphen_less
+hyphen_less_less hyphen_less_less
+less_less less_less
+greater_greater greater_greater
+greater_greater_equal greater_greater_equal
+period_period period_period
+equal_less_less equal_less_less
+plus_plus plus_plus
+slash_equal slash_equal
+greater_greater_hyphen greater_greater_hyphen
+greater_hyphen greater_hyphen
+equal_equal equal_equal
+colon_colon colon_colon
+period_period_period period_period_period