Fourth 2.5 unstable alpha release

Warning from the official Skript repository
This is the fourth public test release of Skript 2.5. It is likely to contain breaking bugs, so it's not recommended at all to run it outside of a test server. Skript 2.4 will continue to receive critical bug fixes until 2.5 is stable, which may take a while.

Full changelog can be seen here : https://github.com/SkriptLang/Skript/releases/tag/2.5-alpha4
Regarding this fork, tutorials have been improved and unbreakable items have been fixed.