Releasing a new HyperSpyUI version

To publish a new exSpy release do the following steps:

Preparation

In a pull request, prepare the release by running the prepare_release.py python script (e.g. python prepare_release.py 2.0) , which will do the following:
- update the release notes in CHANGES.rst by running towncrier,
- update the setuptools_scm fallback version in pyproject.toml (for a patch release, this will stay the same).
Check release notes

Tag and release

Create a tag e.g. git tag -a v2.0 -m "HyperSpyUI version 2.0". The HyperSpyUI version will be set at build time from the tag by setuptools_scm.
Push tag to user fork for a test run git push origin v2.0. Will run the release workflow without uploading to PyPi
⚠️ this is a point of no return ⚠️ Push tag to HyperSpyUI repository to trigger release git push upstream v2.0:
- The release workflow will run and upload the sdist and wheel to pypi.org
- A Github release will be created
- build the doc and push it to the gh-pages branch which will in turn publish it to https://hyperspy.org/hyperspyUI

Post-release action