Questown

"Skills" UI now only shows jobs which have been unlocked by the villager or are "known" and can be unlocked
"Known" skills are selected randomly and added when new villagers join
When villagers earn experience and level up, they earn a "Block of Progress", which they store on the town flag
Players can use Blocks of Progress
    To unlock "known" jobs on specific villagers
    To request a change of "profession" (e.g. gatherer to farmer) which happens on the next morning.
Revamped the /qt commands provided by this mod. They are now hierarchical.
Fixed bug where achievements unlocked too soon
Fixed integer overflow -> caused massive quest batches
Fixed crash in job board when placing sign on wall
Added journal entry for building farm (triggered by a pending farm quest being added)
Villagers now render an arm swing when they work
Refactored villager serializer to make it easier to add to
Prevented stuck villagers by abandoning work target randomly
Villagers no longer collide with players or other villagers
Work seekers can sleep now
Fixed bug where villagers were refusing to sleep in empty beds
Fixed big where villagers reported "unmet needs" for jobs they don't yet have access to