bumped v to 0.6.8.1 to make cocoapods pusher happy

remove #warning to make cocoapods linter happy

fixed unreachable code warning

bumped to 0.6.5

optimized hash functions to read memory-mapped NSDatas efficiently (c…

…hunk by chunk)

link to new location of the glossary

label support

streamlines hex-related methods

bumped to 0.5.3