Allow inheritance from callablegeneric type

[timkpaine]

No description provided.

[github-actions]

Test Results

427 tests  +1   423 ✅ +1   25s ⏱️ +2s
  1 suites ±0     4 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit 0775016. ± Comparison against base commit 5d07635.

[codecov]

Codecov Report

❌ Patch coverage is 90.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 95.41%. Comparing base (5d07635) to head (0775016).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
ccflow/tests/test_callable.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #136   +/-   ##
=======================================
  Coverage   95.41%   95.41%           
=======================================
  Files         120      120           
  Lines        6755     6765   +10     
  Branches      427      428    +1     
=======================================
+ Hits         6445     6455   +10     
- Misses        202      203    +1     
+ Partials      108      107    -1     

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