0.4.0

Breaking change, please ensure your mosaic scripts are backed up and autosave.ptn and autosave.pset are deleted from the dust/data/mosaic before update

• Sinfonion sync is no longer experimental and doesn't require modifications to norns
• NB now doesn't crash the script if there are no mods installed
• Merge modes have been totally overhauled to be much more flexible and powerful
• Bug fixes
• 100+ unit tests added
• Stability and crash fixes