Revert "check shapes, not length, to account for arrays with 0-length dims"

This reverts commit 84805a4.

Author: BioTurboNick

src/lib/broadcast.jl

@@ -55,7 +55,7 @@ end
 
 function unbroadcast(x::AbstractArray, x̄)
   N = ndims(x̄)
-  if size(x) == size(x̄)
+  if length(x) == length(x̄)
     _project(x, x̄)  # ProjectTo handles reshape, offsets, structured matrices, row vectors
   else
     dims = ntuple(d -> size(x, d) == 1 ? d : ndims(x̄)+1, ndims(x̄))