ENYO-402: Increase precision of animation calculations.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #917 from enyojs/ENYO-402-blakestephens

ENYO-402: Increase precision of animation calculations.

Integrated-By: Aaron Tam (aaron.tam@lge.com)