Extra Stage

[StarWitch]

Much of this work is already done in the [spoilers] branch. This is to track it as part of the v1.4 "project."

Todo

• [ ] Rebase branch up to modern standards
• [ ] Stage mob patterns
• [ ] Mid-boss patterns
• [ ] Boss patterns
• [ ] Edit dialogue (@StarWitch)
• [ ] Stage BGM (finish)
• [ ] Boss BGM (refresh/edit)