On the behavior of the multi-point envelope

[AlvanMerri]

While using a multipoint envelope I noticed the speed settings did not behave the way I expected them to
- When defining a loop, the first run of the loop is matched with attack speed rather than loop speed
- On the finish looping setting, the release's speed is matched with the loop's speed (or the attack speed if the first loop wasn't entirely run through on release) rather than release speed

Minimal steps to reproduce:
- in an empty (poly) synth, add an oscillator and connect a multipoint envelope
- draw a triangle shape (1:0, 2:100, 3:0) on the multi-point
- define a loop between 1, 2
- mix speed settings (20 faster attack, 0.0 loop, 20 faster release)
playing different length notes should make it noticeable

[MuTools]

While using a multipoint envelope I noticed the speed settings did not behave the way I expected them to
- When defining a loop, the first run of the loop is matched with attack speed rather than loop speed

I could repeat this one, and it will be fixed in the next M10.0.56.

On the finish looping setting, the release's speed is matched with the loop's speed (or the attack speed if the first loop wasn't entirely run through on release) rather than release speed

I couldn't repeat this one.
Lets re-examine when M10.0.56 is available. (one of the days)

[AlvanMerri]

I can confirm working with mulab 10.0.57 fixed both of these issues
thanks as always!