add mubsub requirement

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
make generic pubsub driver for mbc-common

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
bump version, redis is gone from name

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
CHANGELOG

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
return an object with a 'subscribe' and a 'publish' properties

Signed-off-by: Tomas Neme <lacrymology@gmail.com>