Bugfix release for v0.9.0

• Fixed crash when closing the parent patch of an opened subpatch
• Fixed plugin shutdown crash on Windows
• Fixed array redrawing bug
• Fixed crash when using palettes or "add object" menu in plugins
• Fixed broken multi-drag connection behaviour
• Fixed graph rendering bug when scrolling
• Fixed rendering artifacts on connection cords
• Fixed [pic] send symbol
• Fixed multichannel connection rendering
• Fixed MIDI input for Logic instrument plugins
• Fixed strange tooltip behaviour on Linux
• FIxed crash when sending "open" message to "pd"
• Fix redo broken after deleting an object and undoing
• Fix rendering with very small global scale applied
• Fixed memory leak when plugin editor is closed
• Fix numbox issue with canvas synchronisation
• Fixed window dragging scale bug
• Optimised [note] and [messbox] objects
• Drastically reduced VRAM usage
• Optimised various actions like copy/paste/duplicate/remove when performed on many objects
• Small startup optimisations
• Various rendering optimisations
  • More efficient use of memory and CPU cache
  • Do more work directly from shader
  • Removed redundant work
• Fixed various iOS bugs (release will be on AppStore soon!)