DeVille

This release is focused largely on clean up work before 3.5.0 goes stable. See #2313 #2316 #2336

Features

• Update Visual Studio build facade (@am11, #2288)
• Update read me (@mgreter, #2310)
• Performance improvement with @extends (@mgreter, #2314)

Fixes

• Disable FMA3 when compiling with Visual Studio 2013 (@am11, sass/node-sass#1854)
• Fix for loop variable to be referenced (@mgreter, #2330)
• Fix number compare issues when used as map keys with old gcc (@mgreter, #2331)
• Fix results of map-get not being evaluated (@mgreter, #2309)
• Fix null pointer access (@mgreter, sass/node-sass#1880)
• Fix null pointer access (@mgreter, #2321)