Added option to automatically rotate patches in a nonuniform list such that height is always greater than or equal to width; this is a big data reduction for collections of elongated patches

PatchStack remembers crop boundaries of individual patches if created from list of non-matching patches

Dev multichannel classifiers

See merge request !29

Corrects both problems in issue0029

See merge request !28

Corrected error with overlapping bounding boxes, whereby a second box would overwrite a first; instead, masks are now just additive; also catch case when trying to draw contours from a mask that is a single pixel across

Bug - exporting white_channel equal zero

See merge request !27

Allow exporting of mono patches from run_exports

See merge request !26

Allow "expanded" parameter to patch exports

See merge request !25

Serialize after running other exports, as patch path is embedded in dataframe;...

See merge request !24

Serialize after running other exports, as patch path is embedded in dataframe; write this with subdirectory

Changed name of path mask path column

See merge request !23

Use relative patch paths

See merge request !22

Key error running exports

See merge request !21