version 8.7

• rnd and rndw are no longer builtin functions, but are now regular routines in the math module.
• rnd and rndf routines can now be seeded with rndseed and rndseedf routines. You can get a reproducible sequence of random numbers this way.
• new integer rnd routine that is smaller and faster than the previous one.
• added cx16diskio.vload_raw to load headerless file into VRAM.
• added gfx2.pget to get a pixel color value.
• bit shifts of 8 and more no longer silently result in 0 but give a warning.
• removed silent promotion of byte -> word bit shift that would occur if it was a simple assignment.
• fixed indexing pointer variable with word index.
• fixed various compiler problems with negating array values.
• documentation improvements and spelling corrections.
• other bug fixes.
• the IR and VM have been rewritten to use a graph based code chunk representation. A dead code remover has been added that can remove all unused/unreachable code lines. NOTE: this codegen backend still only works in the vm target.