dagger fails when data is a LinearAlgebra.adjoint

[Krastanov]

julia> op = Operator(GenericBasis(1),GenericBasis(2),[1,1]')
Operator(dim=1x2)
  basis left:  Basis(dim=1)
  basis right: Basis(dim=2)
[1 1]

julia> op'
ERROR: DimensionMismatch: Tried to assign data of size (2,) to bases of length 2 and 1!

This error happens because Julia does not guarantee that size(a')==reverse(size(a)). In particular:

julia> size([1,1])
(2,)

julia> size([1,1]')
(1, 2)

julia> size([1,1]'') # Quantum optics currently expects the answer to be (2,1)
(2,)

julia> size([1;;1])
(1, 2)

julia> size([1;;1]')
(2, 1)

Related to solutions provided in qojulia/QuantumOptics.jl#322