add basic timestamps to some client output
add basic timestamps to some client output

Yawning/ricochet-client,isislovecruft/xocolatl,paulperegud/xmpp-client,iseeareddoor/xmpp-client,twstrike/xmpp-client,thommfullery/birdcannon,isislovecruft/xmpp-client,kenkes/xmpp-client,agl/xmpp-client