Ignis Fatuus v3

Bugfixes:

• The hard/insane mode song doesn’t restart when exiting a level and returning to the main menu.
• One of the cat images was previously unattainable but can now be unlocked.

QOL improvements:

• The ghost is now capable of passing through walls.
• You can switch between ghost and human forms using the TAB key.
• Resetting with R as the human no longer transitions you to the ghost phase.

Misc:

• Small tweaks to some levels.