Spontaneous Trivia Generator

Spontaneous Trivia Generator sends trivia to servers spontaneously or manually. Categories include: arts & literature, geography, entertainment, history, science & nature, and miscellaneous. Future questions' possible categories are customizeable and can be any combination of the list. Manually spawned questions can have unique categories to the server standard. Each time a non-command message is sent, the bot has a customizeable chance of sending a question. The default chance is 4%. When a user answers a question correctly, that user's score increases by 1, and the question cannot be answered again. There is no penalty for getting a question wrong, and questions can be attempted infinite times. The correct answer to the latest question is viewable, but once viewed the question cannot be answered. Scores can be seen in server and global leaderboards.