Captcha Ultimate- AntiBot Plugin

LICENSE(VERY IMPORTANT):
https://github.com/Kalendarky/captcha-ultimate_minecraft/blob/master/LICENSE

Tested on Java: 8
How does it work?
After the player is connected, a special code is generated that is different each time a player has to write to the chat: /captcha specialcode
Players got 10 seconds, then kicks him. The player can not move or write to the chat.
But once it is verified, over /captcha, it will be able to write, move, and not kick it.
Before the player writes /captcha special code, you can not hurt him.

Saves Hardisk, because each code is deleted. After use or disconnection of the player.
It needs a maximum of 4kb (old) 10 kb (new).
So if you have a hosting where hdd is 1gb, so do not hesitate to use this plugin.

Version 1.7.5 UPDATE
Better code.

Added menu that opens when the player writes the correct captcha code.
There he presses a diamond, and verifies.

When it joins, it has 10 seconds to write a captcha code, then gets kicked.
When he writes it, he has Next 10 seconds to choose a diamond with a menu.

This is very important !!!
This plugin is still under development.
Everything that's written here works.
If something does not work, it's because your server is not on tested versions or java 8.
This does not rule out that it can not work on older versions of java, minecraft.
These versions are not tested but should work: 1.7.10 and higher.
Everything that did not work, in the old versions, has been fixed.
The whole plugin, and everything was tested by me.