add delay compensation

[vizzie]

din sync beta tester mentioned that her sequenced drums were off by enough time that it was noticeable. We need to be able to start the clock ahead of time to get things in sync.

[vizzie]

@ndonald2 I've implemented delay compensation. I've allowed both positive and negative delay comp. Not sure if that is needed, but I did it anyway. Could you take a quick look at the branch delay-compensation to see how well I did? 😄

[vizzie]

inverted delay offset works the same way Track Delay works in Live... negative values start the clock earlier, positive starts the clock later.