QKnob: cleanup (#2637)
QKnob: cleanup (#2637)


fsgiudice/quasar,fsgiudice/quasar,quasarframework/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,pdanpdan/quasar,fsgiudice/quasar,pdanpdan/quasar,quasarframework/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,quasarframework/quasar,rstoenescu/quasar-framework,quasarframework/quasar