imubu:
- tool name become an attribute (and can be saved in the patch)
- scatterplot: fixed crash moving big amount of selected points
- fixed vertical zoom in sonogram editor
- several minor bug fixes

mubu:
- added todict and fromdict methods to save and load mubu content to/from Max dictionary

mubu.play:
- fixed speed change during play
- speed clipped to 0

mubu.knn:
- added getrange method
- added bang method for reselect

- clean up of mubu.concat maxhelp