Suggestion: Implement incrementing multiple tempo markers with hotkey when selected

[singemfrc]

Often I have multiple tempo markers in a row that I want to increment all at once. Like say, in one measure I have 179, 180, 181, 182 every quarter beat to gradually increase the tempo over the course of that measure.

Currently I can click each one and press + or - to move them up or down 1 bpm. But if I highlight more than one marker, the + and - no longer function. Would be useful if I could highlight all and press + or - to increment them all simultaneously.