bfconvert: Errors using -range option with CZI files

[dgault]

Issue raised by user on mailing list: ​http://lists.openmicroscopy.org.uk/pipermail/ome-devel/2017-February/003902.html

Converting from a czi file using the -range option shows a number of issues:

• For multi channel on a single channel is converted
• Specifying the channel with -channel returns no output but without error

Also I have produced some odd looking behaviour with it converting negative planes and percentages thats results in an invalid OME-TIFF

[Zeiss CZI] -> test.ome.tiff [OME-TIFF]

Converted -46/49 planes (-93%)
Converted -41/49 planes (-83%)
Converted -36/49 planes (-73%)
Converted -31/49 planes (-63%)
Converted -26/49 planes (-53%)
Converted -21/49 planes (-42%)
Converted -16/49 planes (-32%)
Converted -11/49 planes (-22%)
Converted -6/49 planes (-12%)
Converted -2/49 planes (-4%)
Converted 1/49 planes (2%)