A late beta release

This release comes much later than we had originally planned. We were waiting for some further improvements to be finished, but in the end couldn't get them to this release. Stable Skript 2.4 will be released soon if everything goes as planned; development of 2.5 has already started. We may backport a few more bug fixes to 2.4 before that.

• Fixed beacon alias not being same as crafted beacon (closes #2459)
• Fixed an exception on Skript startup (closes #2487)
• Fixed llamas and trader llamas confusion (closes #2507)
• Fixed function reloading issues (closes #2461)