Update V0.1.1.6

Thank you for playing Undying Harvest! I hope everyone's ready for the Steam Summer Sale right around the corner. This update adds a new difficulty system as well as a new boss. Get ready! Release 0.1.1.6: -Added difficulty Selection -On easy difficulty, you have 5 lives -On normal difficulty, you have 3 lives, and the time you spend regenerating your health is increased on every down -On hard you have a single life -Added new boss, the Spectral Wraith