Merge pull request #20 from clalarco/issue-19-update-readme

Fixes #19 Updating README and adding an example for use-external-python

Merge pull request #5 from nmenardg-keeper/update-mypy

Fix mypy's missing stubs error

fix mypy regex

Better arguments handling

fix file wildcard patterns

Fix problem matchers not being found

add icon

minor changes

New architecture and matchers

Add screenshot