Update to pre-releases (#176)

src/main/resources/config.sk

@@ -57,6 +57,10 @@ automatically download new version: false
 # If you disable this you can still use '/skript update download' to make Skript download the newest version.
 # If you're concerned about changes use '/skript update changes' for a full list of changes since your current version.
 
+update to pre-releases: true
+# Indicates if Skript should update to pre-release builds, which might be unstable. This is enabled by default, if
+# your first Skript version in this server is pre-release.
+
 enable effect commands: false
 effect command token: !
 # If 'enable effect commands' is set to true, chat messages starting with the 'effect command token' will be interpreted as effects and executed.