Created a test suite for Dezoomify. Currently only some of the most central functionality is tested.

Extended zoom level options.

Adjusted logging levels. Verbosity level zero now prints only warnings and errors.

Added an underscore to batch mode filename numbering.

Exceptions during processing of an individual image in batch mode are now ignored.

File URIs used on Windows are now properly supported.

Fixed bug: downloading progress was not being updated. Joining progressbar crashed, since downloading progressbar was not finished.

Discarded the old jpegtran untiling algorithm, the new one is the only option now.

Untiling - jt_xl - empty space instead of broken tile.

Minor refactoring - more meaningful variable names.

Very minor correction.

Remove unused variable (merge change from pillow branch)

Added another joining algorithm, switching mechanics + smaller changes.

Revert "Added another joining algorithm, switching mechanics + smaller changes."

Added another joining algorithm, switching mechanics + smaller changes.