Post-jam Update 1

The first update after the jam brings bugfixes, polish and more level content.

• Level grew by over 50%; boss health reduced to compensate
• Visual effects for player and enemy deaths
• Player poses according to selected weapon
• Fixed timer could resume after game over if enemy spawned
• Fixed player reviving or re-dying if hit after time ran out
• Fixed player losing some spawn invincibility time when picking up powerup
• Prompt to press Esc or Start after game ends