Caution and loose ends

@TODO @TODO @ TODO

The V1.0 Release will contain things that people need to be aware of ("Caution") and loose ends.

At a minimum, we should do a grep -irn "@TODO" . and describe these things here in this wiki page.

Example output of this grep:

./vhdl/av_pipeline/analog_pipeline.vhd:147:   -- @TODO: Evaluate the capabilities, including outputting an old composite signal instead of VGA
./vhdl/controllers/M65/mega65kbd_to_matrix.vhdl:78:  -- @TODO as of December 2022 (by sy2002): We need to find a smarter solution. This only works well
./vhdl/controllers/M65/matrix_to_keynum.vhdl:184:  -- @TODO We need to find a more elegant solution in future
./rom/monitor/README.md:8:@TODO
./rom/vdrives.asm:64:                ; @TODO: potential for more flexibility see config.vhd
./rom/vdrives.asm:82:                ; @TODO: similar as above; see config.vhd
./rom/strings.asm:118:; @TODO: Adjust strings so that every string ends at the |
./rom/screen.asm:15:                ; @TODO: Right now we only support one "graphics card" for