Build 0.32.0

Includes, builds and updates tests for the following:

* https://github.com/RusticiSoftware/TinCanJS/pull/98 fix content.StatementRed
* https://github.com/RusticiSoftware/TinCanJS/pull/97 Allow the AP to explicitly store a state document with no registration by passing a registration of null in the configuration. & Allow the AP to specify it wants to use POST instead of PUT for application/json.
* https://github.com/RusticiSoftware/TinCanJS/pull/96 Adds two duration functions to TinCan.Utils
* https://github.com/RusticiSoftware/TinCanJS/pull/88 resolves https://github.com/RusticiSoftware/TinCanJS/issues/86 where when making an IE mode get request, TinCanJS adds 'content=undefined' at the end of the querystring.