User-facing changes

• Add experimental skip-offline-players setting (#13)
  • If set to true, it prevents VotifierEvent from firing if the player who voted isn't online.
• Make forwarding method setting case-insensitive on Bukkit (#14)
• Removed Defaulting to noop implementation message on Bukkit, Sponge and Velocity
• Fix proxy forwarding method on BungeeCord

Internal changes

• Specify TCP protocol on the Docker EXPOSE instruction
• Rename default Docker Compose container name to azuvotifier

Full Changelog: https://github.com/azurejelly/azuvotifier/compare/3.3.5...3.3.6