set horizontal mask
remove statistics from data reading class
cli with argparse, fixed imports
mean, distribution, autocorr, power analysis
stereo test data
test import stereo
read stereo data
test stereo run read
read stereo runs
Single Run object through inheritance
single frame object
sensible caching, save, load, reload, rm lazyprop

run will now save to cache file automatically when frames are extracted
(if caching is enabled).

no more lazy property decorator. do this explicitly in the frames
property and make all other methods into normal properties.
X, Z run properties, rm cruft
pickle dict instead of class
delete cache before tests