Switch LTI class and subclasses to use ninputs, noutputs, nstates#515

Merged

bnavigator merged 4 commits intopython-control:masterfrom

murrayrm:input_output_to_ninput_noutput

Jan 24, 2021

Commits on Jan 21, 2021

Commits on Jan 23, 2021

add unit test for input/output/state deprecation warning
murrayrm
committed

Commits on Jan 24, 2021

fix up deprecation warnings in response to @bnavigator review
murrayrm
committed