[release] compatibility fixes, cli improvements and code formatting (!72) · Merge requests · psyplot / psyplot

this MR merges the changes from the develop branch into master. In particular it implements the following changes

migrate to python-package-template, see merge request !60 (merged)
implement custom warning handling, see merge request !61 (merged)
fallback to nearest index when not found, see merge request !62 (merged)
improve guessing of coordinates based on their names, see merge request !63 (merged)
Add metadata info, see merge request !64 (merged), !65 (merged)
Fix enhanced attrs, see merge request !66 (merged)
improve cli yaml options, see merge request !67 (merged)
minor fix for matplotlib 3.8 compatibility, see merge request !68 (merged)
implement ci-matrix for different python and mpl versions, see merge request !69 (merged)
Update plugin guide, see merge request !71 (merged)

[release] compatibility fixes, cli improvements and code formatting