This patch improves flying monsters, allows ghosts to move through blocks, adds more controls to respawning, improves NPC follow behavior, and fixes several other minor issues.

0.847 change list:

• wisps, drakes, ghosts, wampirs, and zombie wampirs can now actually fly

• ghosts can now move through blocks

• now respawn spots that didn't have a monster have less chance to try to respawn

• now cap monster respawns a little so doesn't eventually fill up every respawn spot

• FollowLeader behavior now fails better so can do something more useful

• TeleportLeader will now run immediately if FollowLeader fails (assuming it can)

• made water walking more reliable

• now liches, death knights, fire elementals, lightning elementals, horrors, and zombie horrors can walk on water

• no longer get a town attack warning if "attacked" door takes no damage (mostly so things like nearby zombie imps don't trigger alarm) (Nailclippins)

• fixed nemesis naga's not being able to walk on water

• red, green, and blue light channels have a little more of the other colors in them

• fixed some issues with Strongest Monster Defeated and other similar stats - old values will stick around until something is better though (Tuidjy)

• fixed getMonsterSpawnChance carrying over to all respawns in a level for that frame (probably rarely mattered)

• changed saveVersion to 309