[ENHANCEMENT/BUGFIX] Bopper auto speed check + BPM Change song event type

[MidyGamy]

This fixes the bopper desyncing from each other, imitating the
if(curBeat % 2 == 0) dad.dance();
from the 0.3.X of the game

[MidyGamy]

For the moment, I have to continue it...
It crashes with Week 7 and Weekend 1

[MidyGamy]

submodules are pain

[MidyGamy]

Now should work correctly

[MidyGamy]

Yeah, I just made a branch combining my 2 pull requests... I never thought that would work so well.

[MidyGamy]

So yeah, 2 bug fixes in one:

• the fact it plays too fast the idle twice (forced) after a sing pose
• sometimes the idle plays on odd beats instead of even ones
  And it should find the optimal beat to dance on to be consistent if the idle last more than 2 beats

[MidyGamy]

You should notice it here:
https://www.youtube.com/watch?v=o2e4R2bUNPk