Sensomusic updates Usine to v4.21b

Sensomusic has updated Usine to v4.21b.

Improvements since v4.20b:

• Better scrolling management in the global interface builder.

Bugs fixed since v4.20b:

• Small bug when Usine receives OSC messages with the Tuio protocol.
• Interface builder scrolling effect when the window is unlocked.
• Bad screen shots of the Interface builder in speed buttons.
• The text size in listbox buttons collection is not stored in the patch.
• The store outlet of the preset manager sends always a 1 value.
• Important synchronization bug fixed: Synchronization drift between VST plug-in and Usine internal synchro.
• The MIDI Time Code SMPTE synchro doesn't work properly for frame rate greater than 24fps.