1.14 support, better error handling

[NorbiPeti]

• PLW error handling (vanilla messages, like advancements)
• Vanilla command error handling
• Fixed exception Coder pinging
• Added DC user mention tabcomplete only for commands (MC limitation) (#16)
• Made DCP, PLW version independent
• Msg reset fixed (#101)
• Fixed getInfo if the player isn't on the DC server
• Fixed message after adding or removing a game role
• Made player list, custom and private chat toggleable (#51)
• Added support for vanilla commands on 1.14
• Checks for Minecraft being a game role (interesting bug)
• Moved a ) to fix messages not being received from channels on other servers (#105)
• Automatically get client ID for the invite link
• Made the reset command work even if the main server isn't set
• Fixed the issue of multiple ready events (on this branch too) (#107)
• Fix NPEs resulting from mocking the players (#106)
• Fixed some fields not being set on the PLW mock (#109)