* wip
* add environment class
* use Environment class
* use Environment for scanning modifier options
* remove Environment in favor of API
* await promise
* use modifier symbols on macOS
* fix key separator issues
* if else to switch
* simplify variable names
* update Frontend options on modifier change
* add modifier key profile condition
* use select element for modifier condition value
* support "is" and "is not" modifier key conditions
* use plural
* remove dead null check
it's never null in that function
* pass element on rather than assigning to this
* rename event
* remove Firefox OS key to Meta detection
* hide Meta from dropdown on Firefox
* move input type
