v0.21.3

ModelPredictiveControl v0.21.3

Diff since v0.21.2

• added: index ranges or vectors for plot keyword arguments (to select variables to plot)
• doc: separate page for sim! and plot functions
• doc: document plot keyword arguments
• doc: plot results in examples

Merged pull requests:

• Doc: minor corrections and add preview cleanup workflow (#71) (@franckgaga)
• cleanup MHE append 0 to deviation vector variables (#72) (@franckgaga)
• added: support indices keyword argument in plot recipes (#73) (@franckgaga)
• bump (#74) (@franckgaga)