avancees sur cla
Merge pull request #147 from buguen/master

add run-tests in root directory
major improvement in cla 2/2
remove pdb
RGPA major update 2/2
Merge branch 'loc'
Merge pull request #149 from niamiot/master

improvements in geometric positioning 2/2
Merge branch 'master' of https://github.com/pylayers/pylayers
DOC-RayTRacing2.ipynb corrected