Change Details

Run the travis build. https://travis-ci.org/github/Fabcien/secp256k1/builds/731206555

Run the travis build. https://travis-ci.org/github/Fabcien/secp256k1/builds/731209990

Run the travis build. https://travis-ci.org/github/Fabcien/secp256k1/builds/7312065559990