YAMU demo update 0.03 ver

I've updated You Are My Universe to version 0.03. A lot has changed  since the initial Demo release, which I will detail here:

Extended demo's story to be twice as long as before. It now takes an hour on average to complete. This update includes 2 new main characters, with a little sneak peak at an upcoming third. I've also done some tweaks to the story that was already present, so if you've played a previous version I recommend playing through it again from the start to see what's changed.

Updated/changed some character sprites. 

Added and removed/replaced old music with new ones.

General tweaks to presentation such as GUI to make it look a bit better and easier on me to program.