Merge pull request #2 from johannesh/master

Typo in documentation of register_sum callback
hyper_carray, a hyper_register implemented by a C-array
[hyper_carray] K&R and kernel style, added docs
Merge pull request #3 from johannesh/hyper_carray

hyper_carray, a hyper_register implemented by a C-array
Make compile work with clang
Merge pull request #4 from GameAnalytics/clang_compile

Make compile work with clang