[+] Added a security feature to prevent all teleportations outside the border (ender pearl, /tp, Nether portal, etc...).
[+] Added the 'disable-out-of-border-teleport' parameter to enable or disable this security feature in the config.yml.
[+] Added a messages.yml file for configuring custom messages.
[+] Added the 'out-of-border-teleport' message in messages.yml.
[+] Added the 'permission-command' message in messages.yml.
[+] The source code is now available.
[+] Updated headers.
[+] Added MIT License.