v0.77

- Fixed tutorial giving score
- Fixed Sniper tanks being ghost tanks and having no hitbox and being immortal
- Fixed HP Bar text getting misaligned
- Fixed Tank HP upgrade giving half effect instead of +10
- Fixed Sniper Tanks shooting red bullets for the 4th time. I think I finally found the cause, my bad.
- Slight improvement to the Splash Screen BG. I hope this fixes a Unity/WebGL bug where the background would be the same color as my logo
- Some rebalancing (upgrades, stats)