alfred: bump version to 2015.0

alfred: bump version to 2015.0

From the CHANGELOG:

 * add support to call commands after data was updated
 * automatic reduction of process capabilities when not needed anymore
 * allow printing of the data version number in the alfred client mode
 * various code cleanups
 * bugs squashed:
   - update of the version number when data was updated with different
     version number
   - tighten size check on received packet

Signed-off-by: Simon Wunderlich <[email protected]>