'ray-intersectable' circle (tests to do)
new class 'ray-intersectable circle' and its basic tests
Merge remote-tracking branch 'troussil/circle' into dev
patron du rapport et début de biblio sous latex
Merge branch 'master' of github.com:homeostasie/convergents into dev
Merge branch 'dev' of github.com:homeostasie/convergents into dev