v1.13.0

ControlSystems v1.13.0

Diff since v1.12.0

Merged pull requests:

• CompatHelper: bump compat for ForwardDiff to 1, (keep existing compat) (#977) (@github-actions[bot])
• add notes on solving for open loop from closed loop (#985) (@baggepinnen)
• implement typed_hvcat for LTI systems (#988) (@baggepinnen)
• Use algorithms for poles and zeros of rational matrices from MatrixPencils.jl (#990) (@baggepinnen)

Closed issues:

• Missing details in the docstring for Kalman (#986)
• minreal does not give a minimal realisation (#992)