nanshe/util/xnumpy.py: In `pair_dot_product_normalized`, allow the floating point precision to be selected.
nanshe/util/xnumpy.py: In `pair_dot_product_normalized`, allow the floating point precision to be selected.

nanshe-org/nanshe,nanshe-org/nanshe,DudLab/nanshe,DudLab/nanshe,jakirkham/nanshe,jakirkham/nanshe