Initial work on regex support.
Some minor fixes for regex support.
Started work on expanding the unittests for regex_config.
Stricter type checking for regex keys when updating.
More regex testing.
Fixed a mistake in how regex_configs are exported.
Last set of tests modified for regex support.
Minor cleanup in tests/test_base.py.
@bugfix open ConfigFile() in localdir without prepending './'.
@bugfix type checking for regex_config handler.

Before hand we were checking the type of the data sent to the handler, what we
really want to do is ensure the type of the data returned by the handler.
@bugfix Better update handling for regex_configs.
Updated and expanded the unittests for regex_config.
Rewrote the README.
Bumped version to v0.3.