math is hard >_<
- use doubles instead of floats - simplify logic
- FadeIn and -Out for RepeatPoints are now calculated instead of fixed values - TimePreempt is now cut down if too long for RepeatPoints following the first one to only show up to two RepeatPoints at any given time
See #1935 - repeat index 1 is at the end of the slider, not the start.
It's always first but not strictly guaranteed anywhere yet.