• Added stereo bulking in graph (reverted port connection logic, as bulks can now do it). Mentioned in #38.
• Added optional monochrome icon (enable in settings).
• Added highlight for drag and drop in matrices.
• Fixes: unified connection logic for drag and drop and Connect button in connection manager (Audio tab), fixed rubber band selection being triggered from inside the node (graph), enhanced context menu for bulks (graph), removed bulks from MIDI nodes (graph).