Added requests to requirements file
Added scraper package
Added implementation for get_list_of_seasons function
Added implementation for get_list_of_episodes function
Added implementation for get_episode_source
Added function for getting BeautifulSoup from markup string
Added functions for extracting the description and title of an episode
Added function for getting ids of players featured on an episode
Added implementation for get_episode_show_num
Updated get_episode_player_ids to return a list of ints instead of strs
Rewrote scraper module to encapsulate episode-related functions as methods on Episode class
Added air_date property on Episode class
Created Round class and subclasses for each of the different rounds. Added as properties on Episode class
Removed unused constants
Added implementation for categories property
Merge branch 'feat/get-season-pages'