documentation and code cleanup for the new parts of lensing_ps.py
(#387)
better documentation at top of interpolation testing script
(#387)
clean up and comment gridded test routine
(#387)
more comments in random test
(#387)
refactored grid-based interpolant test to do all interpolants at once
(#387)
put changes into CHANGELOG
(#387)
update demo interpolant to be consistent in yaml, python
(#387)
update error type in table
(#387)
avoid being overly picky about variance tests: random noise and discrete vs. continuous FT makes predictions dicey
(#387)
100 char width
(#387)