Sensomusic updates Usine to v3.66c

Sensomusic has updated Usine to v3.66c.

Changes since v3.66:

Improvements:

• Mouse position outlet in XY panel and surround panner.

Fixed bugs:

• Small details when resizing windows, especially in the Interface builder and the script.
• Manual updates and corrections.
• Solves the aux send glitch problems.