v0.6.1-beta/demo update: change to keyboard mappings and new music — Witchcraft Survivors Steam update #1103074

- Keyboard Mappings: I had 90s style arrow key movement as default, but as most people prefer to use wasd controls, I made it as default that you can use both! The wasd movement is binded and can be changed to other keys in the options, while the arrow keys are always usable ! As a note: The new wasd mapping applies only to people who start the game for the first time as i don't want to override any other preferred method of people who already rebinded, so if you already started the game and want wasd you have to bind it in the options! - New Music Each stage has different music now, the first one (in Grasslands) stays the same while the other stages have new music added! If you like the music, make sure to check out DavidKBD (look him up on your preferred search engine) who makes this and other music royalty free!