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Changes for libdmtx
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version 0.1 [April 2006]
  Initial release

version 0.2 [June 2006]
  Cleaned up program structure surrounding decoding process
  Improved API for real-world use (no longer just dumping results to STDOUT)
  Added "dmtxread" command line utility
  Added "dmtxwrite" command line utility
  Implemented Reed-Solomon error detection
  Created "simpletest.c" for full circle processing test
  Now using libpng(3) in library to read Data Matrix images
  Improved documentation (somewhat)