v2.0.0

This release brings some polish, small bug fixes and cool new additions for Tweeny!

• Add support for easing functions!
• Add a set of 52 Robert Penne's mathematical easing functions
• Add TweenyDrawEase() function to render easing curves
• Moved animation curves to its own optional folder
• Vastly improved JSDocs and fixed some minor spelling errors
• Changed SetLoops() behavior. Now every tween has a single loop by default. Having 0 loops means infinity loops
• Removed source arg.
• Add Bind(ref) method that allows the tween element to keeo track of its parent instance/struct
• Add Await() method that only advances a step once its signal returns true
• Fixed events not triggering on Skip() calls
• Event callbacks now can receive the current step index as an argument
• Event callbacks now works as a single function declaration, instead of the previous queue implementation
• All args for event callbacks must be contained inside an array
• Add TweenyGet() that searches the internal cache for a tween element using an uid string
• Add uid optional arg on Tweeny() creation
• Add Finish() method that terminates all steps and loops for the tween element
• Changed Skip() method to only skips the current step instead of the whole loop
• *All() related functiosn now affects the tween elements themselves instead of the time source
• And some other small fixes :)