char to symbol in Symmetric/HermitianOperator convert

[jishnub]

No description provided.

[codecov]

Codecov Report

Patch coverage: 78.57% and project coverage change: +0.56 🎉

Comparison is base (441f15c) 71.31% compared to head (1be7af0) 71.87%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #501      +/-   ##
==========================================
+ Coverage   71.31%   71.87%   +0.56%     
==========================================
  Files          81       81              
  Lines        8533     8545      +12     
==========================================
+ Hits         6085     6142      +57     
+ Misses       2448     2403      -45     

Impacted Files	Coverage Δ
src/ApproxFunBase.jl	84.00% <ø> (ø)
src/Operators/general/OperatorLayout.jl	67.14% <70.00%> (+37.14%)	⬆️
src/LinearAlgebra/clenshaw.jl	36.31% <100.00%> (ø)
src/Multivariate/Multivariate.jl	55.93% <100.00%> (+1.54%)	⬆️

... and 12 files with indirect coverage changes

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