RELEASE 0.2.1
* added PyPy compatibility to tinkerpy.namespace
* added SAX lexical and declaration handler base classes
* removed utf16chr as there is unichr in the standard library
* new documentation design
* fixed minor documentation problem
* added "MANIFEST.in" to include "License.txt" in source distribution
* minimal documentation update
* added "AllowingList".
* added ProxyDict
* added anonmous_class
* minor modification to namespace
* added "update_globals"
* added str_to_int
* renamed str_from_int to int_to_str and added documentation as well as fixes
* changed setup.cfg to use 'dev' as tag_build