More doc versions

[termi-official]

Add all versions released in the last year to the docs, because not all users have upgraded to latest release yet.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (6fdab04) 92.26% compared to head (5f98d0d) 92.27%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #723      +/-   ##
==========================================
+ Coverage   92.26%   92.27%   +0.01%     
==========================================
  Files          30       30              
  Lines        4536     4530       -6     
==========================================
- Hits         4185     4180       -5     
+ Misses        351      350       -1     

Impacted Files	Coverage Δ
src/deprecations.jl	52.00% <ø> (ø)
src/FEValues/cell_values.jl	100.00% <100.00%> (ø)
src/FEValues/face_values.jl	100.00% <100.00%> (ø)
src/PointEval/PointEvalHandler.jl	91.76% <100.00%> (+0.38%)	⬆️
src/PointEval/point_values.jl	97.36% <100.00%> (ø)
src/interpolations.jl	97.89% <100.00%> (-0.01%)	⬇️

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