0.5.1

Changes

• fix: clear prev_opt_taking_arg even if collectOpts raises error by @sttk in #43
• fix: remade Cmd#sub_cmd not to retrieve a base name of a path-like sub command by @sttk in #44

Docs

• doc,comment: modified documentation comment by @sttk in #42

Supports

• test: added test cases by @sttk in #41
• 0.5.1 by @sttk in #45

Full Changelog: 0.5.0...0.5.1