fix(drawer): Align open & close animations to spec (#976)

Fixes #646

Spec:
* [Natural easing curves](https://material.io/guidelines/motion/duration-easing.html#duration-easing-natural-easing-curves)
* [Movement in and out of screen bounds](https://material.io/guidelines/motion/movement.html#movement-movement-in-out-of-screen-bounds)

Author: acdvorak

packages/mdc-drawer/slidable/_variables.scss

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-$mdc-slidable-drawer-transition-close-time: .13s;
-$mdc-slidable-drawer-transition-open-time: .33s;
-$mdc-slidable-drawer-transition-close: mdc-animation-enter(transform, $mdc-slidable-drawer-transition-close-time);
+$mdc-slidable-drawer-transition-close-time: .195s;
+$mdc-slidable-drawer-transition-open-time: .225s;
+$mdc-slidable-drawer-transition-close: mdc-animation-exit-temporary(transform, $mdc-slidable-drawer-transition-close-time);
 $mdc-slidable-drawer-transition-open: mdc-animation-enter(transform, $mdc-slidable-drawer-transition-open-time);