version 8.8

• fix several FP rom routine addresses on cx16. Some floating point operations didn't work before.
• it's now possible to use symbols that are the same name as 6502 instructions
• removed unused command line option keepIR
• API change: diskio.list_files doesn't have an internal buffer anymore, you now have to supply a buffer + size yourself. Function renamed to list_filenames
• added cx16diskio.f_seek() to seek to a position in an opened file
• diskio file lister routine now also remember the file type (prg, seq, dir)
• fixed endless loop in optimizer on certain expressions
• fixed gfx2 text color and more robust screen mode reset on real hardware (retains display mode)
• added cx16 snow example for the season
• added cx16 diskspeed example
• added more $03xx vector definitions to C64/C128/CX16 syslib
• various other bugfixes and optimizations
• various changes in IR