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Using fpm to create debeian package.
Added debian category and correct maintainer.
Changed version to 3.0b.
Fixed some flags and comments for debian process.
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Restructure into priorities.
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#14: Compute the checksum of the document.
Use document time change as condition if a new checksum is needed.
Improved debug messages.
Clean up Document::UpdateInputData.
Fixed bug where file was restarted when checksum wasn't updated.
The checksum algorithm didn't handle the MinGW environment.
Correction for file size updates on MinGW.
Change to std::FILE and binary file mode.
Remove unused iostreams.