ULTIMATUS 0.3.7 Released

This is primarily a bugfix and minor feature release. It was also released before I realized there was a comment about the music... so it might still be too loud for some people.

• THOR Mode particles have been adjusted. They should no longer be so big they cover the sword.
• Added objective label in top right corner for people new to the genre.
• Changed "Kills" to "Score" to reflect internal working.
• Added working links in credits and license windows.
• Added extra license text to the license window to cover more bases.
• Added sound effects for attacking, floating, and dying.
• Rebalanced audio players to accomodate sound effects.
• Added (very) basic shadow shader.

The GDD has also had some tweaks to hopefully improve readability in the tables.