HyperSpy v1.7 adaptions

[jlaehne]

Description of the change

• set HyperSpy v1.7 as minimum requirement
• remove error messages for non-availability of non-uniform axes
• remove conditions in tests
• adapt mentions in the documentation

Progress of the PR

• [x] Change implemented (can be split into several points),
• [x] docstring updated (if appropriate),
• [x] updated tests,
• [x] added line to CHANGELOG.md,
• [x] ready for review.

Note

Tests run locally, should work once HyperSpy v1.7 is released. Merge will need to wait for the release, but can be reviewed already for a speedy release of LumiSpy v0.2 after the HyperSpy release.

[jlaehne]

@jordiferrero could you chekc if I have missed anything?

[jlaehne]

Thanks for those hints @ericpre.

[codecov-commenter]

Codecov Report

Merging #120 (e0e0d95) into main (bb86230) will increase coverage by 0.94%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #120      +/-   ##
==========================================
+ Coverage   95.76%   96.71%   +0.94%     
==========================================
  Files          11       11              
  Lines         591      579      -12     
==========================================
- Hits          566      560       -6     
+ Misses         25       19       -6     

Impacted Files	Coverage Δ
lumispy/signals/cl_spectrum.py	98.46% <ø> (+1.44%)	:arrow_up:
lumispy/signals/luminescence_spectrum.py	91.75% <ø> (+1.33%)	:arrow_up:
lumispy/utils/axes.py	98.08% <ø> (+1.19%)	:arrow_up:

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