Simple uniform way to extract optional arguments from oiio commands
oiiotool --fit improvements: fix subtle bugs with aspect ratio preservation
for images with differing data and display windows; allow "filter=..."
option to select the filter (as originally advertised but not implemented).
IBA::resize() improvement -- instead of "clamping" at the image edge, just
don't consider nonexistant pixels at all. This solves some artifacts for
certain resize situations, as well as simplifying the logic.
oiiotool --frames and --framepadding give more wildcard flexibility.

When using oiiotool with numeric wildcards ("foo.#.exr"), rather than
rely strictly on matching exiting filenames, the --frames option allows
for explicit flexible frame sequence specification, and --framepadding
overrides the default number of digits (with leading zeroes) for frame
numbers. Examples of frame sequences now supported:
    10,11,13,14       Commas separate subsequences
    10-14             Range
    10-14x2           Range with step (matches 10, 12, 14)

Putting it all together, you can have a command like

   oiiotool --info --frames 10,18,20-30x5 --framepadding 3 foo.#.exr

would match foo.010.exr, foo.018.exr, foo.020.exr, foo.025.exr, foo.030.exr
CHANGES and version bump for 1.1.9
Rebuild PDF docs