Start work on adding Outrun support
Change mind: remove multiple-games-at-once support

This makes things much simpler.
Let different games have different length scores
Label Outrun as not yet working

Use an exclamation mark to note an experimental routine.
Start work on adding Tempest support

But they have different offsets.
Revert "Start work on adding Tempest support"

This reverts commit 047315259241c0e2b86aa7bc1001e0a0bfa6fffc.
Implement with different function instead
Swap initials and scores around...
Fix displaying tempest scores

It now appears to work, albeit backwards.
Work out space conversion

After moving the earom file and getting another high score.
Fix ordering

Tempest now fully works!
Add note for possible quick refactoring
Refactor Tempest: read data backwards

As it's stored perfectly backwards.

Except that when reading it now, the very first byte of the highscore
is wrong (00 instead of 01 for me).
Fix bug
Remove incomplete Outrun code