Some small changes for disposing effects and separating update/draw methods in the manager.

[SrJohnathan]

thanks for the contribution, this is another lib, I accept help, it's in the initial phase

https://github.com/SrJohnathan/libgdx-water

[niraj-rayalla]

Thanks for letting me know. I might look into it later, but for now my focus is on Effekseer.