Instead of having a specific enabled proper, only enable bridges that are listed in the config file.
Fix messagetype
Fix default subscription TTL and move to config file
Replace custom Config/Parser class with simplified ArgumentParser
Rename --debug to --reload to be more descriptive
Remove growl-py as a dependency
Make configuration reloadable.
Move config to own module for later expansion
Pass config into bridge modules
Add verbose/non-verbose options for echo bridge
Remove extra debug. This can be debugged with the echo bridge if needed.
Add config helpers to ReGrowler object

Allows us to avoid setting "key = __name__" for each bridge
Add default password hash
Refactor to get rid of mandatory instance() method
Various bits of refactoring and cleanup