Wrote a speculative XML parser. Found a few minor weakness in the rolne
routines; will fix them; but otherwise it held up well.
More changes than I can describe. The methods of interface are far more
consistent.
added docs
Merge branch 'feature/properties' into develop

Conflicts:
	rolne/__init__.py
Added some critical search functions (exist, eq, ne). Plus lots of cleanup.
cleaned up the rest of the changes. Added a 'grep' for rolne.
Merge branch 'release/0.2.1'