-better memory handling
-support for thumbnails in TIFF format
-new functions exif_imagetype
@-new function exif_imagetype
@-exif_thumbnail fupports thumbnails in TIFF format and can return size
@ of thumbnail
-everything uses new data structures
-new function exif_thumbnail
#nearly stripped off all jhead code
@read_exif_data is now an alias for exif_read_data
@ important to differenciate old/new version for tests)
@new function exif_tagname returns the names of tags
@new function exif_thumbnail extracts embedded thumbnail (Marcus)
#switched to internal version 1.2
+New function exif_headername can be used to read the internal Tag namelist (was mainly created for debugging purpose but maybe somone writes code to create/update exif headers here).
+An internal version number is present.
+A testpage is supplied test.txt describes how the test works.
+The oldfunction read_exif_data has got an alias exif_read_data
As the old version of this module is very buggy i decided to implement the testpage (test.txt) and to create the alias. The test script only works with the alias as the old version does not pass tests. By the way it seems a good way to prepend 'exif_' to all functions in the module.
+Added Description,Artist
+Added missing memory deallocation
+Corrected error with multiple comments
+Corrected handling of ExifVersion, Tag has 4 ASCII characters *WITHOUT* NUL
+Corrected handling of Thumbnailsize if current source detects size < 0
+Changed all fields to char* that do not have a maximum length in EXIF standard
+Undocumented second Parameter ReadAll frees memory to early -> moved to third position default changed to false -> faster
+New second Parameter [true|false] to specify whether or not to to read thumbnails -> reading is timeconsumpting suppose default should be false -> done so
