build: Bump the version to reflect the developement branch
build: Bump the version to reflect the developement branch

1.4 has branched, master in now unstable.

GNOME/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst,ystreet/clutter-gst,skinkie/clutter-gst,skinkie/clutter-gst,GNOME/clutter-gst,skinkie/clutter-gst,lubosz/clutter-gst,lubosz/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst,lubosz/clutter-gst