• Jed Brown's avatar
    license: change from legacy PETSc license to 2-clause BSD · e90a541d
    Jed Brown authored
    This is preferable to avoid license proliferation and to make it easy to
    find documentation of license compatibility.  This change has been
    approved by Aaron Sauers <asauers@anl.gov>.
    
    Contributing guidelines now include the Developer Certificate of Origin,
    though our workflow does not require the explicit Signed-off-by tags
    adopted by some open source projects (mostly those with mailing list
    patch workflows).
    
      http://developercertificate.org/
    e90a541d
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