v1.8.0

ModelingToolkitStandardLibrary v1.8.0

Diff since v1.7.0

Closed issues:

• DC Permanent Machine (#29)
• RC circuit fails (#88)

Merged pull requests:

• add optional operating point in StateSpace (#83) (@baggepinnen)
• Add Force source in Translational (#117) (@YingboMa)
• Fixes missing plot (#118) (@ValentinKaisermayer)
• Reduces disturbance step (#119) (@ValentinKaisermayer)
• Improves docs (#120) (@ValentinKaisermayer)
• docstring backtick fix (#121) (@jaakkor2)
• canonize docs (#122) (@ArnoStrouwen)