Concrete derivative in Jacobi space

[jishnub]

With this, higher-order derivatives in a Jacobi space become concrete instead of being wrappers:

julia> Derivative(Legendre(), 2)
ConcreteDerivative : Legendre() → Jacobi(2,2)
  ⋅    ⋅   3.0   ⋅    ⋅     ⋅     ⋅     ⋅     ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅   5.0   ⋅     ⋅     ⋅     ⋅     ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅   7.5    ⋅     ⋅     ⋅     ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅   10.5    ⋅     ⋅     ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅   14.0    ⋅     ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅     ⋅   18.0    ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅     ⋅     ⋅   22.5    ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅     ⋅     ⋅     ⋅   27.5  ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅     ⋅     ⋅     ⋅     ⋅   ⋱
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅     ⋅     ⋅     ⋅     ⋅   ⋅
  ⋅    ⋅    ⋅    ⋅    ⋅     ⋅     ⋅     ⋅     ⋅     ⋅   ⋅

julia> Derivative(NormalizedLegendre(), 2)
ConcreteDerivative : NormalizedLegendre() → Jacobi(2,2)
  ⋅    ⋅   4.74342   ⋅         ⋅        ⋅        ⋅        ⋅       ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅       9.35414    ⋅        ⋅        ⋅        ⋅       ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅       15.9099    ⋅        ⋅        ⋅       ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅      24.6247    ⋅        ⋅       ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅      35.6931    ⋅       ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅        ⋅      49.295    ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅        ⋅        ⋅     65.5982    ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅        ⋅        ⋅       ⋅      84.7607  ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅        ⋅        ⋅       ⋅        ⋅      ⋱
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅        ⋅        ⋅       ⋅        ⋅      ⋅
  ⋅    ⋅    ⋅        ⋅         ⋅        ⋅        ⋅        ⋅       ⋅        ⋅      ⋅

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (422ec82) 69.41% compared to head (858c401) 72.79%.
Report is 6 commits behind head on master.

Files	Patch %	Lines
src/Spaces/Chebyshev/ChebyshevOperators.jl	90.47%	2 Missing ⚠️
...c/Spaces/Ultraspherical/UltrasphericalOperators.jl	85.71%	1 Missing ⚠️
src/fastops.jl	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #334      +/-   ##
==========================================
+ Coverage   69.41%   72.79%   +3.38%     
==========================================
  Files          30       30              
  Lines        2805     2834      +29     
==========================================
+ Hits         1947     2063     +116     
+ Misses        858      771      -87     

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