switched to bytestring parser
tighten up the parser
small performance improvements
added new attoparsec parser (10 times faster)
obj parsing with groups complete closes #6
added small stripped version of sponza.obj
adopt new obj loader
fixed versions
fixed surface indexing
small parser adjustments
small obj loading changes
fix versions
adopt workaround for ghc bug
adopt new mesh format and text format
Merge branch 'feature/obj-grouping-rework' into development