Update version number to 6.1
Added support for minecart tnt.
Added support for ender crystals.
Removed multi-threading from the program, as it is not necessary and would only slow down the normal process.
Removed duplicate check.
Changed the update index of BlockManager to railsIndex, to make it clearer, because it is the only reacon it exists.
Moved the rails managing to a separate class.
Moved the fall index to its own class.
Changed the CB lib to 1.5
Moved the player suffocating check to its own class.
Add possibility to save only players, or also mobs.
Move the replace list management to another class.
Reordered the fields.
Deleted the blockManager class, as all of the functionalities have been moved.
Added a config option for leaves and vines, and associated the fire and explosion index with them.
Split the FancyListener into several Listeners each corresponding to a performance setting.
Now the burnt block delay before burn again is only active if the delay is  > 0.
Added an option to sort blocks by their distance from the center of the explosion. Removed the method isLightWeight as it is not used anymore.
Removed the "lightweight-mode" option, as it is replaced by the performance settings.
Implemented the transition.
Removed the performance.prevent-fall setting, as it was redundant. Updated the default config file for advanced.yml