Ver. 1.2.5: CSS number fix

This is a generally recommended bugfix update.

Fixes:

• Type annotations: The optional outModifiers parameter of applyRules is more accurately a string[], not a (string | symbol)[].
• parseCSSNumber is now correct. (Was off by two orders of magnitude.)

Revisions:

• Documentation adjustments and clarifications.
• Reset [ELAPSED] to 0 when Game_Interpreter terminates.

I actually tested this with the new 1.9.0 version of MZ already, but forgot to update the help text 😅
I’ve adjusted my local copy in that regard, for future releases.