* Allow custom post reset function, e.g. to load a menu from disk.

* Compatibility mode for PAL SIDs on an NTSC computer and vice versa.

* Provide a default power on environment to the SIDs.

* Display all PSID header information.

* Investigate the use of PSID heuristics (e.g. Rockmonitor support).

* Improve C64 demo: make it more colorful, add a better scroller, etc.
