v1.8.1

ControlSystems v1.8.1

Diff since v1.8.0

Merged pull requests:

• remove automatic field propagation from balance_statespace (#863) (@baggepinnen)
• truncate T in baltrunc (#864) (@baggepinnen)
• add functions to check controllability/observability using the PHB test (#866) (@baggepinnen)
• fix rendering of some equations systems (#868) (@baggepinnen)
• use correct gain type in zpk with length 0 numerator (#870) (@baggepinnen)
• fix transfer function colon indexing (#872) (@baggepinnen)
• fix unwrapping option in bodeplot (#874) (@baggepinnen)
• safe dtmax in continuous lsim (#876) (@baggepinnen)
• fix DelaySS conversion with special number type (#878) (@baggepinnen)
• Incorporate changes from #344 (#881) (@KronosTheLate)
• add tutorial on controller tuning from experimental data (#883) (@baggepinnen)

Closed issues:

• SisoZpk and SisoRational constructors called multiple times from zpk and tf (#387)
• Rendering of state space equations in documentation (#867)
• no method matching zpk for step (#869)
• Using : for indexing does not works on TransferFunction (#871)
• c2d not working with method input (#873)
• change to ControlSystems dosent work for import pkg (#877)