// FREEBIE
TODO
NEED
-[ ] icon in route picker
-[ ] commit cleanup
NICE
-[ ] present action sheet automatically when making outgoing bluetooth call
-[ ] left align icons
-[ ] audio is paused when switching between video mode (maybe existing behavior, not sure)
-[ ] Copy: iPhone/iPad/iPod instead of "iPhone Microphone"
DONE
-[x] remove "receiver" from options while in video mode
-[x] show available audio routes
-[x] select available audio routes
-[x] notification if availabe inputs change so we can update call screen
mid call with available BT route
-[x] include speakerphone in choices
-[x] Enabled button shows active speakerphone. Should still show
bluetooth picker.
-[x] toggle back and forth between audio devices
-[x] hide audio route button in video mode if no BT available
-[x] Fixed: When on speakerphone - switching to video mode goes back to bluetooth.
-[x] Fixed: When switching to video w/ bluetooth device connected there is no
audio picker.
-[x] respect speakerphone/BT selection when in or toggling to/from video
-[x] do not hide audio route button when in video mode and bluetooth
connected
-[x] Show which is currently selected audio route
-[x] switching to speakerphone no longer works
-[x] switching *back* to bluetooth no longer works
-[x] add proper bluetooth button for audio calls
-[x] add proper bluetooth button for video calls
in particular this is a problem when initiating a call from a cold app
state. The call screen renders before the contacts have completely
loaded.
// FREEBIE
* explicit optional usage in strings
* remove some unused StringUtil code
* swiftlint affected files
* more concise optional casting (and avoid a `!`)
Compiler warnings: 343 -> 318
(Actually most of these are in external libs, but 115 remain in Signal/SSK)
// FREEBIE
