fix weighted_norm1 issue with numpy 1.12.0 * workaround for the incorrect behaviour of np 1.12.0   Running:  np.absolute(v[idxs], v[idxs])    does not update v   as opposed to:  np.absolute(v, v)   Same for np.{sign,maximum}
fix weighted_norm1 issue with numpy 1.12.0
* workaround for the incorrect behaviour of np 1.12.0
  Running:  np.absolute(v[idxs], v[idxs])    does not update v
  as opposed to:  np.absolute(v, v)
  Same for np.{sign,maximum}

timmeinhardt/ProxImaL,timmeinhardt/ProxImaL,timmeinhardt/ProxImaL,comp-imaging/ProxImaL,comp-imaging/ProxImaL,comp-imaging/ProxImaL,timmeinhardt/ProxImaL,comp-imaging/ProxImaL