Add f-contiguous handling for gemm. Add geam.
Move most of the operations to the GPU for the TpsGpuSolver, including solving the linear system (if CULA is installed).
Add GPU version of balance_matrix3.
Minor fix in TpsGpuSolver when use_cula=False.
Add comment to specify the role of demos in the RegistrationFactory. Add plotting args to batch_register.
Handle dynamic definition of cpu/gpu classes and functions.