version 9.6

• added math.diff() and math.diffw()
• added gfx2.init_mode() if you don't want to switch current screen mode but still use gfx2 library
• added gfx2.safe_circle() and safe_disc() that clip the pixels to the screen.
• added several routines to textio that can set and read the cursor position.
• some textio improvements on the atari target.
• added f_seek_w to diskio on commander X16 (needs f_open_w_seek() to work)
• verafx.mult/muls now return the upper 16 bits of the 32 bits result in r0.
• diskio.f_write now uses fast MCIOUT block transfer routine on the Commander X16
• added sys.disable_caseswitch/enable_caseswitch
• added cx16.set_chrin_keyhandler to insert custom key handler routine into CHRIN/BASIN
• added string.append
• improved compatibility of cx16.vpeek()
• pokemon() now actually pokes a value but also returns the previous value that was in the memory location
• added %zpallowed to explicitly list the zeropage locations that the compiler can use (as opposed to %zpreserved)
• fixed the fill() flood fill routines to no longer read outside of the screen, also optimized them a bit more.
• fixed parameter passing bug for certain word types
• several code gen optimizations.
• several code gen and compiler bug fixes.