Bump version number to 1.2.1

Change-Id: I96686740c2572818fce36de23cf2c16f127fdda9
Reviewed-by: Roman Lacko <backup.rlacko@gmail.com>
Reviewed-by: John Cumming <john@jsolutions.co.uk>
Reviewed-by: John Cummings <jcummings2@users.sf.net>