minor fix, missing colon
Some more fiddling and fixes.
IIRC, bzero is deprecated.
Replace removing an object, then adding a new one at the same index: we can just replace the object at the specified index.
Merge pull request #4 from seltzered/patch-1

minor fix, missing colon
Include the tgmath header: it makes it so that common math functions (sin, cos, tan, etc…) to use a more appropriate version (cosf, tanl, etc…).
I have no idea what I'm doing...
Merge branch 'cleanup'

Conflicts:
	SVGKit.xcodeproj/project.pbxproj
Fix compilation on OS X.
Further fixes.