Bump version number
Fix transition interrupting

Talkie was being bitten by the D3 change documented in
https://github.com/mbostock/d3/issues/1410

For example, in the countdown demo, if you scrub the the end and
then scrub back during the colour animation, the number will end
up pink.

Essentially, style changes made after running cancelTransition()
were sometimes being overridded by the transition running for one
more frame after being cancelled.

Using the new explicit .interrupt() method fixes this.