Changes in version 2.0.2
------------------------

* implemented Spectrum emulator
* implemented real time clock
* in the default keyboard map, Home can also be used now as HOLD, and
End as STOP; the original keys (Pause/Break and PrintScreen/SysRq)
did not work on some machines
* keyboard matrix state is no longer cleared on soft reset
* NICK registers are initialized to random values on start-up
* added new ROM images and machine configuration presets
* the makecfg utility now asks for an installation directory if
started without command line arguments, and automatically creates
directories
* minor improvements to GUI menu layout