Print statement left in the plugin's code? [1.2.0]

Hello,

Glad to see the 1.2 out !
Just so that you know: maybe it's intended (though, it's not using the logger), there is a print statement left in the plugin's `_load_module` method, [line 510](https://github.com/fralau/mkdocs-macros-plugin/blob/e8b3f45628ebaf8be2cb9d58a7263dd8dc3df24f/mkdocs_macros/plugin.py#L510)

Cheers