Martin Perier--Dulhoste

First of all thanks for the work ! It seems the channel argument is redundant with the webhook_url argument since the creation of a Slack webhook URL requires a channel...

While doing the MR #31 I followed the CONTRIBUTING step-by-step and I have some feedbacks / remarks / problems: 1. Once the conda environment is installed, the `pre-commit` was not...

- The test coverage can be computed thanks to pytest job. - It is always nice for a user to know what is the test coverage of the library used.

An issue template is a good way to define the structure of the issue based on the type: bug, feature request, documentation, ...