Fix duplicate conquered villain messages when killing fighters after …

…a duel

Fix furniture tick frequency without resorting to hardcoding furnitur…

…e tick frequencies

Merge branch 'stable' of github.com:miki151/keeperrl into stable

Update appconfigs

Fix index out of bounds crash in UI.

Serialize unique ids instead of Creature* in Dancing to avoid danglin…

…g pointers.

Remove the necromancer keeper.

Add locked cyclops keeper.

Fix compile error

Revert "Optimize updating minion visibility."

This reverts commit bb2766e.