Munge

Added
- option_list to Context
- log to Context
- config search path includes ~/.$APP_NAME
Changed
- empty meta returns empty dict instead of None

Added
- py3 support
Fixed
- set click.Context.home when config is found

Fixed
- version bump for proper semantic versioning

Added
- CHANGELOG!
- allow changing config_name
- try_read
- config.meta
- config.copy()
- click.Context
Removed
- unused get_type, Endpoint