Grayskull

Infrastructure:
- Add gitter badge as well
- Use latest images on azure pipelines for Windows and OSX

Features:
- Add possibility to disable output when running grayskull. It will disable the output when using grayskull as a module.

Bug Fix:
- Return a better message when not executing grayskull correctly from the CLI

Fix for config.yaml on pypi regarding the metaplotlib keyword for conda-forge

Add feature to track different package names from repositories and conda-forge

- Fixed entry points when they are specified as string instead of a list
- Writting the license file with the same name as on the github repository.

Remove comments in dependencies

Replaced ``fuzzywuzzy`` by ``rapidfuzz``. (maxbachmann )