Allow for different animation interpolator

[tyalie]

Giving an animation interpolator to the animator would be great.

[tyalie]

I'll add an option for that myself and push it to you for review.

But I have a question about that: Is it possible to set something like that through annotations? How would the implementation look like?

[yuriy-budiyev]

Implementation with annotations will require codegen or refelection, both of them seems like too huge overhead for a just progress bar. Classic solution looks good.

[tyalie]

One small question: When will the update be released as a Gradle repositories?

[yuriy-budiyev]

Soon