feat: bring algebras into shape

[thofma]

• documentation
• tests
• renaming

[codecov]

Codecov Report

Attention: Patch coverage is 91.23649% with 73 lines in your changes missing coverage. Please review.

Project coverage is 75.70%. Comparing base (ee980a7) to head (ee36582).
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
src/AlgAss/Conversions.jl	82.03%	67 Missing ⚠️
src/AlgAss/AbsAlgAss.jl	72.72%	3 Missing ⚠️
src/AlgAss/Decompose.jl	99.33%	2 Missing ⚠️
src/AlgAss/StructureConstantAlgebra.jl	99.20%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1588       +/-   ##
===========================================
+ Coverage    5.44%   75.70%   +70.26%     
===========================================
  Files         358      362        +4     
  Lines      113490   113899      +409     
===========================================
+ Hits         6183    86231    +80048     
+ Misses     107307    27668    -79639     

Files with missing lines	Coverage Δ
src/AlgAss/AlgGrp.jl	72.89% <100.00%> (+72.89%)	⬆️
src/AlgAss/AlgMat.jl	88.54% <100.00%> (+88.54%)	⬆️
src/AlgAss/Elem.jl	88.68% <100.00%> (+88.68%)	⬆️
src/AlgAssAbsOrd/Elem.jl	84.51% <100.00%> (+84.51%)	⬆️
src/AlgAssAbsOrd/Ideal.jl	77.04% <100.00%> (+77.04%)	⬆️
src/AlgAss/StructureConstantAlgebra.jl	93.44% <99.20%> (ø)
src/AlgAss/Decompose.jl	99.33% <99.33%> (ø)
src/AlgAss/AbsAlgAss.jl	88.05% <72.72%> (+88.05%)	⬆️
src/AlgAss/Conversions.jl	82.03% <82.03%> (ø)

... and 317 files with indirect coverage changes