Include tests for conda packaging, fix bug in __array_ufunc__

Links to LiberTEM issue https://github.com/LiberTEM/LiberTEM/issues/1271

Includes tests in the source tarball so that conda build can run them.

Also fixes a potential bug in array_ufunc:

Specifically when the out= kwarg to the ufunc was (None,) numpy was raising a TypeError. I've added a line which converts the single-entry (None,) to just None and now no problems (with the tests). [Mixed/mutil-array out= or single-array out will still remain as they are.]

approved this merge request

added 3 commits

• ac987861 - 1 commit from branch empyre:master
• 1f393287 - Add tests to MANIFEST
• 6ce75c5c - Fix for (None,) out_arr tuple numpy error

Compare with previous version

added 5 commits

• 6509595a - Update .gitlab-ci.yml file
• 14b305ed - Update .gitlab-ci.yml file
• d6b372d5 - Update .gitlab-ci.yml to turn on MR pipelines
• 0e115e8f - Add tests to MANIFEST
• b2af05ae - Fix for (None,) out_arr tuple numpy error

Compare with previous version

I fixed the CI by using the pip install definition for requirements / test requirements rather than environment.yml, and for now hardcoding the docs requirements into the CI pipeline. Temporary solution but for now it's green.

added 5 commits

• ac987861 - 1 commit from branch empyre:master
• 55dc7683 - Update .gitlab-ci.yml file
• b970c0b7 - Update .gitlab-ci.yml file
• f7c70857 - Add tests to MANIFEST
• f681fe79 - Fix for (None,) out_arr tuple numpy error

Compare with previous version

It's weird that ac987861 was needed - as for a previous MR (!38) it did indeed run (although the run itself failed, which is another story :P)

It's possible that the pipeline configuration needs additional changes - right now, as I understand, it will only build for merge requests, as witnessed by having no run for the latest master commit here: https://iffgit.fz-juelich.de/empyre/empyre/-/pipelines - so the upload to PyPI for a tag run also probably won't work.

Maybe something like this would work?

workflow:
  rules:
   - when: always

Or do we need to exclude anything explicitly?

Docs for workflow: https://docs.gitlab.com/ee/ci/yaml/workflow.html

added 7 commits

• 6509595a - Update .gitlab-ci.yml file
• 14b305ed - Update .gitlab-ci.yml file
• d6b372d5 - Update .gitlab-ci.yml to turn on MR pipelines
• 0e115e8f - Add tests to MANIFEST
• b2af05ae - Fix for (None,) out_arr tuple numpy error
• fcf18cf5 - Add doc requirements and remove environment.yml
• 5267a9c2 - Install CI docs requirements from setup.cfg

Compare with previous version

Needs a rebase, then this MR should be ready to merge. @jan-car if you find the time, please have a look. The CI things we can fix separately.

added 7 commits

• ac987861 - 1 commit from branch empyre:master
• cda1bc0c - Update .gitlab-ci.yml file
• 578f09e7 - Update .gitlab-ci.yml file
• 8f1f9d98 - Add tests to MANIFEST
• 0c29fb88 - Fix for (None,) out_arr tuple numpy error
• fd8f5879 - Add doc requirements and remove environment.yml
• 672aa30a - Install CI docs requirements from setup.cfg

Compare with previous version

mentioned in commit f16dec4d

merged