Leaves Us In Peace

• Fixed persistent leaves' distance never being calculated when 'ignorePersistentLeaves' was enabled.
• This prevented observers from triggering when observing persistent leaves whose distance should have changed, which is used in some redstone contraptions.
• Persistent leaves now calculate distance based on both non-persistent and persistent leaves, while non-persistent leaves still ignore persistent leaves (if the config is enabled).

A cumulative changelog can be found here