[ts.manip.netcdf] support for loading 16bit imgs
[ts.parse] support reading of CR2s via scikit image
[benchmark_image_io] quick image io benchmarks

Just skimage.io vs cv2, read then write.
[ts.parse] fix bug in all_images_all_times
Merge branch 'master' into dev
Merge pull request #7 from kdmurray91/dev

Raw image support