Set OMICRON_HTML in omicron.utils.get_omicron_version

[duncanmmacleod]

This PR patches omicron.utils.get_omicron_version() to always set OMICRON_HTML (to gettempdir()) to avoid a segfault.

[codecov]

Codecov Report

Merging #174 (25f4126) into master (62e4c52) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #174      +/-   ##
==========================================
+ Coverage   35.12%   35.15%   +0.02%     
==========================================
  Files          30       30              
  Lines        2941     2942       +1     
==========================================
+ Hits         1033     1034       +1     
  Misses       1908     1908              

Flag	Coverage Δ
Conda	35.15% <100.00%> (+0.02%)	⬆️
Linux	35.15% <100.00%> (+0.02%)	⬆️
macOS	35.15% <100.00%> (+0.02%)	⬆️
python3.10	35.15% <100.00%> (+0.02%)	⬆️
python3.11	35.15% <100.00%> (+0.02%)	⬆️
python3.9	35.16% <100.00%> (+0.02%)	⬆️

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Files	Coverage Δ
omicron/utils.py	81.08% <100.00%> (+0.53%)	⬆️

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[areeda]

I don't understand why we have these flake8 problems.
If on my mac I do

git fetch upstream master
git switch upstream/master
git switch -c upstream_master
flake8

I get no complaints. My repositories are:

$ gre -v
origin	[email protected]:areeda/pyomicron.git (fetch)
origin	[email protected]:areeda/pyomicron.git (push)
upstream	[email protected]:gwpy/pyomicron.git (fetch)
upstream	[email protected]:gwpy/pyomicron.git (push)

Can you see what I'm missing?
..edit..
I also did a git clone of the repo and flake8 was silent. I have not quieted the whitespace around operators (for example)

[duncanmmacleod]

The flake8 complaints are only visible using Python >=3.12, but are fixed by #175.

[areeda]

Thanks