Add option to disable query on butcher
Fun books now have charges that represent chapters.
Books that have run out of chapters are not as much fun any more.
Allow a third option for butcher query mode: "Only query if hostiles are nearby"
Fix internal furnace androids only eating one book chapter at a time.
Lower penalty for re-reading old books from 75% to 50%.
Remove option for butcher query, instead querying only if hostiles are around. If there are multiple corpses, show a selection list. Allows double tapping the butcher hotkey to just do the first corpse.
Support older C++ standard
Notify player of fun reduction from finished books.
Merge butchery query only when in danger, and chapters for fun books.