Adds a better command line interface to gauge comparisons (#746)

* Adds a better command line interface to gauge comparison

Also adds some minor changes to imports and a todo regarding switching
to pathlib

* Add short flag versions

Adds a better command line interface to gauge comparisons (#746)

* Adds a better command line interface to gauge comparison

Also adds some minor changes to imports and a todo regarding switching
to pathlib

* Add short flag versions

Merge pull request #747 from rjleveque/CoC

add CoC

Numpy frame (#739)

* More flexible frame argument

* More explicit error message

* simply cast to int

* no numbers import

* one-line int conversion

Since `frame` would appear in the error anyway, I guess this is cleaner

Merge pull request #724 from carlosmunozmoncayo/additionalchanges

Additional changes to Pytest-based tests and CI workflow

Merge pull request #720 from ketch/compile_all_examples

Fix some issues with examples and meson.

Merge pull request #713 from ketch/bugfix_nov3

Fix typo in recent commit.

Merge pull request #704 from sanromd/fix_sedov_test

fixed read issues in test_sedov_and_hdf.

Merge pull request #690 from luzpaz/typos

Fix various typos

Create main.yml