mediawiki.Recategorize now has a simpler edit summary. Also made sure to
mark all edits as bot edits.
mediawiki.CategorizeToNLVillagerHouses now uses bot=1 too.

mediawiki.PerformInPageChannel performs a PageFunction through a
channel of pages until said channel closes.

mediawiki.QueryUnusedImages and mediawiki.QueryUncategorizedImages
queries the UnusedImages and UncategorizedImages categories.

go-mwclient updated to v1.1.2.