v1.2.0 Update!

I've updated the library with some tweaks, to make it a bit more useful in more practical cases.

Here's the full changelog:

• Added support for up to 16 arguments instead of 1.
• The functions will now run in the instance the timer was created in.
• If the instance cannot be found by the time the timer ends, the timer will get destroyed without running any code.
• You don't have to manually declare timers as persistent anymore, it now depends on the instance running the timer.
• Slightly updated the example.

If you guys have any suggestions, or anything of that sort, don't be afraid to send them to me.