Add option for kmin_factor and kmax_factor to lensing ps buildGrid function.
(#377)
Merge branch '#372' into #377
added to error messages
(#377)
Add clarifying comment about more stringent test of shear variance accuracy
(#377)
Remove debugging print statements.
(#377)
Add clarification that kmin_factor, kmax_factor are just convenience parameters.
Check that ngrid, kmin_factor, kmax_factor are integers
Merge pull request #415 from GalSim-developers/#377

#377 Add options to use a larger range of k values when building grid for PowerSpectrum