userinput for two emulations synced by RIOT ports. RIOT port
driver/passenger synchronisation ensures user input is seen by the
emulations at the same time (relative to the emulation's television)
does not yet handle RNGs (randomise on startup or the RNG in the DPC or
DPC+ formats yet). we need to add a context type first
Initialising can be used for cartridge loading / hotloading but
EmulatorStart is the setup state of the emulator and gui. it is useful
for preventing some gui operations while emulator is starting up
switch between debugger and playmode with F6 or backtick key
pakage debugger remains for now but it will be renamed to emulator or
something like that. playmode package removed.
commandline options for both debugger and playmode are the same
currently, with some playmode features being lost (temporarily)
like peripheral event and cartridge event notifications but placed in
the top-left corner of the screen
fixed race condition by calling playmode Pause() from the GUI thread
clarfied that the use of the Emulation type is for passive monitoring of
the underlying emulation. rewind package now monitors the emulation
passively.
