5.1.2: ReflectionUtility improvements and new bStats chart

• Improve ReflectionUtility
  • Fix incorrect Minecraft version comparison
  • Limit .reflection. split to 2
  • Add #getDeclaredField(...)
  • Minor code improvements
• Bump version (5.1.2)
• Add annoying_api_version to bStats
  • Added AnnoyingPlugin#ANNOYING_API_VERSION for this

Full Changelog: 5.1.1...5.1.2