- update cityhash lib version
- ditch old rubies. support only Ruby 2.0+
- let the environment dictate the arch
- do not define CRC methods if it's not supported by system
- do not segfalt with non-string input
- use proper compiler flag to compile crc version of cityhash lib (see README about installing gem on OSX, on Linux everything should work out of the box)
- add crc methods
- add CityHash.hash32 method
- update libcityhash to 1.1. See NEWS