Make use of default operator
Merge pull request #105 from abstractj/minor-cleanup

Looks valid to me. Merged.
Added array buffer codec
Added faster arraybuffer version of ccm
Updated sources
Added array buffer tests
Update tests in makefile
Removed eval
array buffer codec can now handle buffer with byteLength%4!==0
Added tests for arraybuffer codec, and now will throw error if you try to convert bitLength%8 !==0 since arraybuffers work in bytes