Update README with info about 2ndstage

results: Fix bug where score is misaligned in nonstop results screen

2ndstage: Fix nonstop/challenge mode

2ndstage: Fix bug on versus and double modes

Add feature that locks player on '2nd Stage' forever on EVENT mode

Improvements to gsimage script

Remove completed TODO from README

Disable feature when PRO mode is turned off

Move score display one pixel to the right

Fix crash when showing two player total results screen

Unfortunately the system573 appears to run out of memory when showing the
additional sprites that we need for the total fast/slow count. Therefore, we
need to reduce the memory footprint by eliminating two useless digits from the
score display for each player.

There should be no user-facing regression from doing this since EXTREME PRO uses
EX score instead of the money score system, so these digits are never used
anyway.

Additional documentation for game code hooks

Move mips32sld code into separate repo

Results screen support

Merge branch 'feature/results-screen'

Checkpoint: Hide "TryExtraStage!!" text

There isn't enough room for this graphic on the results screen anymore,
so we have to unconditionally hide it.

Checkpoint: Fix total results screen

Remove release binaries from repo

Scripting for results screen feature

Code formatting fixes

Remove bad patches that were messing with results screen

Beginning work on total results screen support