Eigen for FillArrays

[jishnub]

Rebase #256 with only the FillArray part implemented this time. This makes eigvals O(1) and eigen O(N^2)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.91%. Comparing base (6f61dc3) to head (38b9c08).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #330   +/-   ##
=======================================
  Coverage   99.91%   99.91%           
=======================================
  Files           8        8           
  Lines        1147     1171   +24     
=======================================
+ Hits         1146     1170   +24     
  Misses          1        1           

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[dlfivefifty]

This (and other parts that depend on LinearAlgebra.jl) should probably be an extension? Though I guess that can wait

[jishnub]

Yes, we should move these to an extension eventually. Presumably, LinearAlgebra will be excised in Julia v1.11, so we should do it in the next few months.

[jishnub]

Should we proceed?

[jishnub]

Gentle bump

[jishnub]

Gentle bump

[jishnub]

Bump

[jishnub]

Gentle bump