30264
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11151 More changes needed to trait/classes polymorphism
https://pharo.fogbugz.com/f/cases/11151/(pass 1) Diff information: http://smalltalkhub.com/mc/Pharo/Pharo30/main/Traits-EstebanLorenzano.544.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/RPackage-Core-EstebanLorenzano.238.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/NautilusCommon-EstebanLorenzano.150.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/FuelTests-EstebanLorenzano.325.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/Compiler-EstebanLorenzano.499.diff
