High score fix update!

Ello! 

I've updated the builds to V3, after fixing a couple of bugs I didn't have time to fix during the game jam:

High score! It now tracks your highest score and saves it, so you know what you need to beat. This broke on the final day of the jam and caused me a total panic at the time, so I just removed it so I could get a game out. Happy to get around to fixing it today, as it makes a big difference I think. Gives you something to keep track of, and aim for.

Final score. Someone said on socials that not showing the final score at the end of the game is a bad thing and it reminded me I need to sort that! I took out showing the final score on the 'hay' screen at the end of the game jam, because the score kept getting reset when it loaded. Now that's one less thing to fix.

Oh, and I nearly forgot.. you can now press ESC on the menu screen to exit! I totally forgot to include a way to get out of it until now, sorry!

There's still loads of stuff I'd like to do with this game, so I hope to find time to update it again soon!

Cheers!