initial working version of saving arbitrary tags from the img.tags directory
Add arbitrary tags to tiff images using an ImageFileDirectory
Py3 -- can't join a string
Merge branch 'master' into tifftags
streamlining internal representation of types in ImageFileDirectory
Using the public interface rather than the raw, undecoded interface
Changes in the internal representation of ImageFileDirectory
Additional tests for reading and writing Tiff ImageFileDirectories
better handling of unicode, rational tuples
typo
Proper handling of both IFDs for libtiff usage
Writing multiple rational items
Additional test image
Python3 fixes
Python 2.6 compatibility
Another python 2.6 detail
Merge branch 'master' into tifftags
Added tiff save option documentation
merge from master
PhotometricInterpretation is set from SAVE_INFO, not the original image, so spurious test failure.