Miscellaneous improvements

[kmnhan]

~This should be the last PR prior to 3.1.0 release.~

~If numba 0.61 arrives soon, explicit python 3.13 support will also be incorporated here.~

3.13 support will be added later!

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 86.44986% with 100 lines in your changes missing coverage. Please review.

Project coverage is 82.07%. Comparing base (035d82b) to head (07767e7). Report is 37 commits behind head on main.

:white_check_mark: All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/erlab/interactive/imagetool/manager.py	82.93%	57 Missing :warning:
src/erlab/interactive/imagetool/core.py	25.00%	18 Missing :warning:
src/erlab/interactive/imagetool/__init__.py	91.39%	8 Missing :warning:
src/erlab/interactive/utils.py	93.00%	7 Missing :warning:
src/erlab/accessors/kspace.py	91.66%	2 Missing :warning:
src/erlab/interactive/imagetool/slicer.py	77.77%	2 Missing :warning:
src/erlab/io/dataloader.py	81.81%	2 Missing :warning:
src/erlab/plotting/annotations.py	50.00%	2 Missing :warning:
src/erlab/io/plugins/maestro.py	93.75%	1 Missing :warning:
src/erlab/plotting/__init__.py	93.75%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #69 +/- ## ========================================== + Coverage 81.84% 82.07% +0.22% ========================================== Files 67 67 Lines 11674 12008 +334 ========================================== + Hits 9555 9855 +300 - Misses 2119 2153 +34 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.