Update v1.3.1 - Device Charge + Bugfixes

This update changes the Freeze Ray and Dolphin Signal devices to use "charge" instead of ammo, and fixes some bugs from the previous update.

Device Charge

• Devices with toggleable abilities continuously use charge while activated.
• Running out of charge automatically ends the ability.
• This prevents awkward situations where you exit a room on accident right as you use your device. Instead of losing a whole ammo point, you will only lose a bit of charge.

Bug Fixes & Small Changes

• Device selection screen can be closed to return to main menu.
• Score is now shown when the game ends.
• Fixed a bug that caused enemies to sometimes turn invisible.