Cut a Release

Create a PR to the RELEASE_next_patch branch and go through the following steps:

Preparation

Update and check changelog in CHANGES.rst
Bump version in hyperspy/Release.py
(optional) check conda-forge and wheels build. Pushing a tag to a fork will run the release workflow without uploading to pypi
Let that PR collect comments for a day to ensure that other maintainers are comfortable with releasing

Tag and release ⚠️ this is a point of no return point ⚠️

push tag (vx.y.z) to the upstream repository and the following will be triggered:
- creation of a zenodo record and the mining of a DOI
- creation of a Github Release
- build of the wheels and their upload to pypi
- update of the current version on readthedocs to this release

Post-release action

Increment the version and set it back to dev: vx.y.z.dev0
Update version in other branches when necessary
Prepare CHANGES.rst for development
Merge the PR

Follow-up

Tidy up and close corresponding milestone
A PR to the conda-forge feedstock will be created by the conda-forge bot