Fixes several sync problems:

• Deleting an item now reaches your other devices instead of coming back
• Changes are no longer lost if you close the popup right after making them
• Ticking an item or editing its text now syncs, not just adding and removing
• Changes made while a sync was already running are no longer discarded
• Typing while a sync is arriving no longer discards what it brought

Auto-sync is now on from the moment you connect Google Drive.