Expand S2Cap coverage. Refs #55
Fix deprecated NanCString calls. Fixes #56
Merge branch 'master' of github.com:mapbox/node-s2
Add Cap#interiorIntersects
wrap cstring in std::string as workaround to fix tests
Merge pull request #63 from mapbox/fix-295fe45

wrap C string in std::string as workaround to fix tests
use static_asserts where possible instead of hand-rolled compiler assertions that trigger local typedef warnings
replace all COMPILE_ASSERTS
move VerifySizes macro hack to a static_assert