Rufus Norris's National Theatre ushers in new generation of writers
The artistic director's second NT season welcomes devised pieces, experimentation and co-productions, and includes new shows by Bryony Kimmings and Lucy Kirkwood " plus a transfer of the acclaimed Young ChekhovWhen the Canadian artist Heather Cassils was set alight on the Dorfman stage one afternoon last November as part of the Spill festival, it sent a visible smoke signal about the changing direction of the Nationa…