Liftlower callbacks

[GordonSmith]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 79.65194% with 152 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.14%. Comparing base (af57bb6) to head (945ab1e).
⚠️ Report is 8 commits behind head on trunk.

Files with missing lines	Patch %	Lines
include/cmcpp/context.hpp	81.23%	63 Missing and 49 partials ⚠️
include/cmcpp/runtime.hpp	62.16%	20 Missing and 8 partials ⚠️
include/cmcpp/func.hpp	71.42%	1 Missing and 9 partials ⚠️
include/cmcpp/lower.hpp	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            trunk       #7      +/-   ##
==========================================
- Coverage   85.27%   82.14%   -3.13%     
==========================================
  Files          15       19       +4     
  Lines         618     1389     +771     
  Branches       39      122      +83     
==========================================
+ Hits          527     1141     +614     
- Misses         71      162      +91     
- Partials       20       86      +66     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

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