Introduce insert-license pre-commit hook, Switch `#` comment instead of `"""` docstring for the copyright and license statements

This can cause some issues in the future.

Todos

• Introduce insert-license hook
• Update license header without docstring but with #, thanks to insert-license.
• Get rid of update_copyright_year.sh which becomes useless
• Document how to update the copyright year

changed milestone to %0.10.0

added Easy pick Project labels

marked this issue as related to duniterpy#134 (closed)

mentioned in issue #371 (closed)

marked this issue as related to #371 (closed)

changed the description

marked the checklist item Introduce insert-license hook as completed

marked the checklist item Update license header without docstring but with #, thanks to insert-license. as completed

marked the checklist item Get rid of update_copyright_year.sh which becomes useless as completed

marked the checklist item Document how to update the copyright year as completed

added Dev Env label

assigned to @moul

mentioned in commit f6a6e590

mentioned in commit 0c3af7cc

mentioned in commit ca16533d

mentioned in commit 39aace1f

added Doc/Website label

mentioned in merge request !187 (merged)

mentioned in commit bf9eb1f2

mentioned in commit 955c76fa