#41 add CUT functionality to the recorder extension

[BCA]

during practising and recording I wished more and more, the recorder would offer for cutting out too miserable attempts to play a part of a piece alright.
Presently, I start every recording from the top, when trying to record a piece - but, as a musician, I need to record a session, without getting out of the float of performance. So I dream of a possibility to set cut-in and cut-out marks, and scissor, to cut the piece a little after a recording session. Do you see some possibility for this?