Update podspec to 1.2.0.
Update podspec to 1.2.0.

- This version requires ARC and blocks. It does not support garbage collection, for that please see 1.1.x.

Signed-off-by: Aron Cedercrantz <ce30127eefa07a02d568832e3de6952fb491981c@cedercrantz.se>

rastersize/CDEvents,rastersize/CDEvents