0.1.5 Second Alpha

Some more bug-fixes:

• Fix for object streams in files which require brute force searching.
• Handle NullToken presence when creating documents.
• Support for PDFs where the filters are defined as indirect references (against specification).
• Support for CMYK when generating PNG images from IPdfImage.
• Support for indexed ColorSpaces where palette is stored in a string.
• Handle UTF16 strings in encrypted document dictionaries.
• Handle documents with a XMP metadata stream instead of an information dictionary.
• CCITTFaxDecode filter support.
• Tweaks to DefaultWordExtractor to try and detect word gap size based on preceding text instead of a global gap threshold.

Note that changes to DefaultWordExtractor may change the output of calls to Page.GetWords() in this version.