v0.12.0

ControlSystems v0.12.0

Diff since v0.11.12

• Breaking: Plots.jl is no longer loaded by ControlSystems.jl. This improves loading times for the package, but means that users will have to run using Plots manually before plotting functions are available.
• Deprecations: Functions dare/dlyap/dkalman/dlqr are now deprecated in favor of an interface that uses dispatch on the types Continuous / Discrete. Example: dare(A,B,Q,R) is now are(Discrete,A,B,Q,R) or are(sysd,Q,R).

Closed issues:

• Error using dare function (#249)
• Conversion problem for ss(1,1,1,0)/3 (#299)
• norm, covar, dlyap cannot handle systems of dimension > 150 (#300)
• Unity feedback of discrete-time system (#304)
• StateSpace with all SparseArrays converts to dense on creation (#311)
• Discussion of frequency responses (#321)
• marginplot is a function (#340)
• Add constructors with nu, ny, nx for easy rebuilding (#399)
• Stable system with unstable step response (#419)
• isapprox for SisoRational broken (#547)
• rlocus issues (#606)
• Rlocusplot with zero excess (#611)
• Remove prescale? (#614)

Merged pull requests:

• No Plots.jl (#235) (@mfalt)
• Fixed missing tic in docstring (#608) (@jonniedie)
• export balance_statespace (#609) (@baggepinnen)
• improve rlocusplot (#612) (@baggepinnen)
• add api page that everything that is exported (#613) (@baggepinnen)
• Fix discrete ss to zpk conversion (#615) (@albheim)
• rm duplicate docstrings due to Documenter limitation (#616) (@baggepinnen)
• Fix some test warnings (#617) (@albheim)
• hinfnorm: early exit for cases where norm is 0 (#618) (@baggepinnen)
• special transform if matrix is unitary (#619) (@baggepinnen)
• remove prescale (#620) (@baggepinnen)
• add test for unitary similarity trasnform (#621) (@baggepinnen)
• Fix some problems for comparisons between tfs (#622) (@albheim)
• balance tf -> ss by default (#623) (@baggepinnen)
• remove ny,nu fields from TransferFunction (#624) (@baggepinnen)
• fix type errors in ss (#625) (@baggepinnen)
• Add tests for discrete feedback (#626) (@baggepinnen)
• use "built-in" blockdiag (#627) (@baggepinnen)
• wider signature in lsim(tf) (#628) (@baggepinnen)
• use timeevol types to dispatch matrix equations (#629) (@baggepinnen)
• make numbers and matrices work as systems in freqresp and friends (#630) (@baggepinnen)
• improve sigmaplot label handling (#631) (@baggepinnen)
• Fix occasional problems with solve not including endpoint (#632) (@baggepinnen)
• document SimResult and its plot (#633) (@baggepinnen)
• update readme before release (#634) (@baggepinnen)