Preliminary support for config files:   - added 'find_config_files()' and 'parse_config_files()' methods   - added 'command_options' attribute Comment/docstring updates.
Preliminary support for config files:
  - added 'find_config_files()' and 'parse_config_files()' methods
  - added 'command_options' attribute
Comment/docstring updates.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator