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Pre-roll curves for automation

When recording automations in arranger mode (but also in loop mode), the curve should be at the level of the first animated recorded key. It would avoid drop up/down on recorded automation.
So, instead of: ---___ it would be: __ ____ , even if the automation recording starts at the beginning of third loop.
And, of course, when loading a midi program change, it must be taken into account. This, to avoid sudden changes.