v0.3.1-alpha

What's New:
-A scoring history feature has been added on the scoring screen to allow users to keep track of all points scored, who they were scored by and for what song.

-An undo feature has been added to the scoring screen that allows users to undo any previous scoring action, allowing them to easily fix any scoring mistakes.

-Ability to edit songs and players on the song and player setup screens have been added. Instructions for using this new feature have been added on both the song and player setup screens.

-Improved layout for instructions on song and player setup screens.

-Instructions for song and player setup screens have been rewritten to be more simple and straight forward.

Code Changes:
-The source code in several files was refactored to improve modularization.
-Code in several files were cleaned up to remove any old code from previous versions that were still commented out.
-Added comments to functions that were missing them in several files. Also rewrote comments in a couple files that were outdated and referenced outdated logic.

For a detailed explanation of all changes (both feature wise and code wise), please read the full release notes for this version.