Opencl fixes
This resolves lbmpy#9 (closed)
SerialDataHandling.swap was not aware of OpenCL and neither a to_cpu method in BoundaryHandling.
Edited by Stephan Seitz
This resolves lbmpy#9 (closed)
SerialDataHandling.swap was not aware of OpenCL and neither a to_cpu method in BoundaryHandling.