Do not compare array against 0
Coverity CID 1111070, CID 1034348, CID 1034347, CID 1034345
Pixelpipe rework: allow iops to specify from what pipe to compute hustogram
Deflicker: mode switching: gui complete
DEFLICKER_MODE_SOURCEFILE is working?
DEFLICKER_MODE_AUTOMATIC is working?
SSE for uint16_t histogram
Histogram refactoring: v1
Parallel histogram!
histogram_helper_cs_RAW_uint16 integrated
upd; FIXME: is ch correct?
upd
Lab SSE && assert(dt_is_aligned(pixel, 16));