Added dtype and shape attributes to ConcatenatedArrays class.
Added dtype and shape attributes to ConcatenatedArrays class.

rossant/phy,nippoo/phy,kwikteam/phy,kwikteam/phy,nippoo/phy,nsteinme/phy,nsteinme/phy,kwikteam/phy,rossant/phy,rossant/phy