Move from `SparseArrays` to a package with multidimensional sparse array support?

Add generalized Pauli operators

Change assertions to exceptions with helpful messages where relevant

FFTOperators on sparse operators gives wrong answers

Errow when showing operators containing symbolic variables

Indexing deprecation warnings

`Vararg` deprecation warnings

allocation tests for time-dependent operators fail on julia 1.11

Import coherentstate, thermalstate, displace, squeeze, wigner from QuantumInterface

`entanglement_entropy` can be a footgun (it has different meaning for Kets and Operators) -- consider deprecating in favor of separate functions