New/changed features:
- Added support for showing a loader image on MEGA65 (Type: IFF)
- Added information on max call depth to VIEW_STACK_RECORDS mode.
Bugfixes:
- Fixed bug in calculation of save slot count for non-VM builds on C64, Plus/4 and MEGA65.
- Init dynmem_pointer on MEGA65 before splash screen, as it's used if player changes to darkmode while on splash screen, and this would cause the interpreter to break on a MEGA65 with a newer ROM version.