It was found that the Spigot API's methods for cancelling player collisions won't work without changing the scoreboard. Because of that, the normal option has been disabled. The invisibility option has also been removed, as that's a bad idea if players can still push each-other.
The toggle player option which is implemented in this commit does disable player collision, so that's the only working way right now.
A potential ConcurrentModificationException has been fixed.
The parkourCheckpoint command has been removed, as the functionality is now available through the API.
Adds some missing save arena method calls for parkourArena's edit methods.
Adds a message when a player reaches a new parkour checkpoint, and makes sure to avoid repeated messages.
Adds /dleave and /pleave as aliases to /minigamesleave
Fixes the win block type causing a win even when the win location is set.
Fixes the leave command only working for dropper arenas.
Fixes the command listener only cancelling command usage while in a dropper arena.
Fixes only dropper sessions being quit when the server stops.
Makes sure to actually load the configuration when starting the plugin
Makes sure all numeric configuration values are within expected bounds
Adds improved descriptions of configuration values' bounds
Removes the option to not override the vertical speed
Adds options for whether sneaking and sprinting should be blocked while in an arena
Adds more materials to the default config's whitelist
Fixes reloading not properly loading the new config
Fixes config options not loading because the root node was missing
Prevents players combusting while in an arena
