Fix recursive adjoint/transpose

[jishnub]

On master

julia> S = SMatrix{2,3}(1:6)
2×3 SMatrix{2, 3, Int64, 6} with indices SOneTo(2)×SOneTo(3):
 1  3  5
 2  4  6

julia> Z = Zeros(typeof(S), 2,2)
2×2 Zeros{SMatrix{2, 3, Int64, 6}}

julia> Z' # element type is incorrect, as adjoint should be recursive
2×2 Zeros{SMatrix{2, 3, Int64, 6}}

After this,

julia> Z'
2×2 Zeros{SMatrix{3, 2, Int64, 6}}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6c3d030) 95.25% compared to head (1b18abd) 99.89%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #322      +/-   ##
==========================================
+ Coverage   95.25%   99.89%   +4.63%     
==========================================
  Files           8        8              
  Lines         906      910       +4     
==========================================
+ Hits          863      909      +46     
+ Misses         43        1      -42     

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