Removed libxml dependency, performance improvements, bump 0.1.1

Libxmljs is now replaced with a bridgesupport specific xml parser.

The new parser is 36% faster and lower code footprint (maintenance).  

The new parser uses 49.1% less memory (technically leaking memory fixes).

Added a few new unit tests for performance/memory. 

This passes all existing unit tests (unmodified), no changes in the API.

Note, this function was renamed since some unit tests include both the old and new import, I also have private API tests for this that weren't included that directly use the internal API that needed to have separately named functions (instead of both of them named bridgesupport).  Let me know if you want this renamed back to bridgesupport.