Adding license header in every .py file
# Please enter the commit message for your changes. Lines starting
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# Committer: cassio fraga dantas <cfragada@galileo.irisa.fr>
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# On branch master
# Your branch is up-to-date with 'origin/master'.
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# Changes to be committed:
#	modified:   dynascreen/dictionary.py
#	modified:   dynascreen/fast_mat_prod.pyx
#	modified:   dynascreen/problem.py
#	modified:   dynascreen/setup.py
#	modified:   dynascreen/solve.py
#	modified:   experiments/__init__.py
#	modified:   experiments/__main__.py
#	modified:   experiments/expe.py
#	modified:   experiments/expe_approx.py
#	modified:   experiments/expe_journal.py
#	modified:   experiments/generate_problem.py
#	modified:   experiments/misc.py
#	modified:   figures.py
#	modified:   run.py
#	modified:   time_RC_gain.py
#
