Patch 0.2 notes

System changes:

- Unrelated objects now communicate with each other by Unity Events via Event Manager.

Bugfixes:

- Fixed a bug that caused player to fly after WASD movement on slopes

- Fixed a bug that caused double hit when player attack multiple enemies

- Fixed a bug that made cursor invisible after pick up first note

- Fixed a bug where options textbox at menu was pink and unreadable

- Fixed a bug that caused enemies to stay alive with exactly 0 health points during their attack animation

- Fixed layers for weapon and environment objects in order to detect correct collisions