v1.2.4

Commits

• 6c1d50e: Added appropriate error handling to beatmap parsing (hburn7) #30
• 5aa8664: Difficulty regex, player ready state fixes (hburn7) #30
• e235e03: Player state tests (hburn7) #30
• a37360f: Fixed incorrect test case (hburn7) #30
• 3984821: Fixed compile time error in test (hburn7)