Includes changes from 119 and 129
* 119 refactored the parsing logic by representing HTML entities as classes, and using those classes as the interface that the transformation logic depends on. This created a clear separation of concerns whereas previously, logic about the HTML entities was intermingled with the transformation logic to convert the HTML into Python data structures.
* 129 added the ability to fetch regular season box scores for a given player/season combination. This was ntsirakis' first contribution 👏 !