v1.1.0

BINDINGS/C++: Document that image_input::probe() always returns an invalid image and an invalid codec info on error
BINDINGS/C++: Make image_input::probe() use the same codec as next_frame()
COMMON: Restore I/O position after successful sail_probe_io()
COMMON: Add sail_probe_io_with_options() so path-based probe uses the extension (RAW for DNG) while memory probe still uses the magic number