v0.2.1 - 30. Jun. 2023

added delay property to WaveguideOperators which can be set with the related keyword delay when created. They allow for non-markovian dynamics / feedback.
added effective_hamiltonian and in general the file InputOutput.jl to deal with systems with more complex input-output relations
Documentation overhaul
Thesis source files added to repository
Possible upstreamable extension of LazyOperators being multiplied added