Extension for Quaternions.jl

[brainandforce]

This allows for construction, conversion, and promotion between Quaternion and AbstractCliffordNumber{VGA(3)} instances: Quaternion{T} is treated as effectively identical to EvenCliffordNumber{VGA(3),T,4}.

Promotion preserves CliffordNumbers.jl semantics, so any promotion involving both Quaternion and AbstractCliffordNumber{VGA(3)} will return an AbstractCliffordNumber{VGA(3)}.

The Quaternions.jl slerp implementation is defined for AbstractCliffordNumber arguments, but in the future CliffordNumbers.jl may provide its own slerp implementation for arbitrary algebras.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.78%. Comparing base (dda14d2) to head (8af09ab).
Report is 17 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
+ Coverage   89.40%   89.78%   +0.37%     
==========================================
  Files          23       24       +1     
  Lines         840      871      +31     
==========================================
+ Hits          751      782      +31     
  Misses         89       89              

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

[brainandforce]

wow this took forever