Post jam update - more accurate slingshot, leaderboard fix

• Based on jam comments, adjusted gravity, force, weight, to make slinging eggs more predictable / easier
• Following jam feedback, moved the slingshot higher up to make it easier to sling eggs
• Starts in fullscreen by default (except for html5)
• Leaderboard fixes (it hasn't been wiped, don't worry)
• New and improved voice acting (when egg hits a target)

As always, recommended to download the game if possible rather than html5 version