Switch mode without restart#806

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Namazed wants to merge 4 commits intonatario1:mainfrom

Namazed:switch_mode_without_restart

Commits on Mar 12, 2020

Tried change switch mode without restart for Engine 1.
Namazed
committed

Commits on Mar 23, 2020

Small refactoring
Namazed
committed

Commits on Mar 26, 2020