Unbound Backlight Brightness; Turn Backlight Off at 0x00 #299
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This is primarily the work of @tommycw1 from #297. This fixes #294.
This unbounds the backlight setting. As @tommycw1 points out, values below the stated value in the documentation seem to work. How low each device goes seems to vary, I have added documentation to help users. All devices seem to have an upper limit at 0x7F. But they all treat values above this as max. So I have removed the bounding as it is unnecessary.
This also merges the backlight on/off command into the level command. Setting the backlight to 0x00 will turn it off, and any other value will turn it on.
Tested on:
Dimmers
Switches
Keypadlincs
Outlets
Unit Tests Added
Linters passed.
Documentation Updated