ENH: Prefer excluding upper bound in streamline length filtering

[jhlegarreta]

Quick description

Change streamline length filtering to use a half-open interval, including streamlines at the minimum length threshold while excluding those exactly matching the maximum length threshold.

Using a half-open interval simplifies length binning by allowing natural bin definitions (e.g., [80, 90), [90, 100), etc.), avoiding arbitrary floating-point thresholds (e.g. [80-89.99], [90-99.99] or [80.01-90], [90.01-100], etc.) and preventing duplicate assignments at bin boundaries.

Also, this allows the philosophy to be consistent with major Python packages like NumPy, etc. when dealing with intervals.

Type of change

Check the relevant options.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Provide data, screenshots, command line to test (if relevant)

N/A

Checklist

• My code follows the style guidelines of this project (run autopep8)
• I added relevant citations to scripts, modules and functions docstrings and descriptions
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I moved all functions from the script file (except the argparser and main) to scilpy modules
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.59%. Comparing base (31cf4e5) to head (792999c).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1344   +/-   ##
=======================================
  Coverage   72.59%   72.59%           
=======================================
  Files         301      301           
  Lines       26283    26283           
  Branches     3700     3700           
=======================================
+ Hits        19080    19081    +1     
+ Misses       5651     5650    -1     
  Partials     1552     1552           

Flag	Coverage Δ
smoketests	69.75% <ø> (+<0.01%)	⬆️
unittests	14.21% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
Scripts	75.32% <ø> (+<0.01%)	⬆️
Library	69.32% <ø> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.