This commit slightly modifies the behaviour of absolute transforms,
we will get them working soon :D

This commit start to remove the expensive bbox calculation by assuming
that the origin stays at a fixed point during an animation. This is a
good assumption as transforms don't change the bbox of the element.

Changes
=======
- Refactor the Element.transform function
- Make a getOrigin function to call the bbox only one time

This commit finally gets transformations workin in both absolute and
relative mode. This is the last **major** hurdle for the new
animation module, so we just need to clean it up and fix some bugs 🐞

- error in Matrix constructor which ignores translateX (and more?)
- generelized all morphable objects so that they behave logical
- SVG.Morphable can handle all datatypes now

This commit allows the timeline to exist independently of the actual
time. This will allow it to be used to seek through an animation
with relative ease. We also made some architectural changes to the
timeline to support this.

Changes
=======
- Refactored the runner into its own file without exposing it to the
user (changed the gulpfile)
- The timeline no longer depends on the current time
- The user can supply absolute times to queue events
- Some more methods have been integrated into the timeline