Notes for SoPlex Release 1.7.1

What's new
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 - new features for row representation: 
    - Farkas ray for infeasible LPs and primal ray for unbounded LPs
    - writing of basis file

 - many bugfixes especially for row representation

 - code reorganization to unify methods of CLUFactor


For details seee the CHANGELOG file and the Doxygen documentation.