* Added ability to cancel events
* Made more events cancellable
* Added event_priority to __config
* Check for string values for performance
* Made player_finishes_using_item cancellable
* Made player_chooses_recipe cancellable
* Made player_swaps_hands cancellable
* Made player_message cancellable
* Added __on_player_placing_block (#1498)
* Added event to docs, keywords, event_test
* Added docs for event cancellation