Upgrade the Copyright strings to point to AUTHORS and drop years

Fixes #539.

* AUTHORS: Update by indicating the status of each contributor.
* Makefile.am, bench/Makefile.am, bench/dtgbasat/Makefile.am,
bench/dtgbasat/gen.py, bench/emptchk/Makefile.am,
bench/emptchk/defs.in, bench/ltl2tgba/Makefile.am,
bench/ltl2tgba/defs.in, bench/ltl2tgba/sum.py,
bench/ltlclasses/Makefile.am, bench/ltlcounter/Makefile.am,
bench/spin13/Makefile.am, bench/stutter/Makefile.am,
bench/stutter/stutter_invariance_formulas.cc,
bench/stutter/stutter_invariance_randomgraph.cc,
bench/wdba/Makefile.am, bin/Makefile.am, bin/autcross.cc,
bin/autfilt.cc, bin/common_aoutput.cc, bin/common_aoutput.hh,
bin/common_color.cc, bin/common_color.hh, bin/common_conv.cc,
bin/common_conv.hh, bin/common_cout.cc, bin/common_cout.hh,
bin/common_file.cc, bin/common_file.hh, bin/common_finput.cc,
bin/common_finput.hh, bin/common_hoaread.cc, bin/common_hoaread.hh,
bin/common_output.cc, bin/common_output.hh, bin/common_post.cc,
bin/common_post.hh, bin/common_r.cc, bin/common_r.hh,
bin/common_range.cc, bin/common_range.hh, bin/common_setup.cc,
bin/common_setup.hh, bin/common_sys.hh, bin/common_trans.cc,
bin/common_trans.hh, bin/dstar2tgba.cc, bin/genaut.cc, bin/genltl.cc,
bin/ltl2tgba.cc, bin/ltl2tgta.cc, bin/ltlcross.cc, bin/ltldo.cc,
bin/ltlfilt.cc, bin/ltlgrind.cc, bin/ltlsynt.cc, bin/man/Makefile.am,
bin/options.py, bin/randaut.cc, bin/randltl.cc, bin/spot-x.cc,
bin/spot.cc, configure.ac, debian/copyright, doc/Makefile.am,
doc/tl/Makefile.am, elisp/Makefile.am, python/Makefile.am,
python/buddy.i, python/spot/__init__.py, python/spot/aux_.py,
python/spot/gen.i, python/spot/impl.i, python/spot/jupyter.py,
python/spot/ltsmin.i, spot/Makefile.am, spot/gen/Makefile.am,
spot/gen/automata.cc, spot/gen/automata.hh, spot/gen/formulas.cc,
spot/gen/formulas.hh, spot/graph/Makefile.am, spot/graph/graph.hh,
spot/graph/ngraph.hh, spot/kripke/Makefile.am,
spot/kripke/fairkripke.cc, spot/kripke/fairkripke.hh,
spot/kripke/fwd.hh, spot/kripke/kripke.cc, spot/kripke/kripke.hh,
spot/kripke/kripkegraph.hh, spot/ltsmin/Makefile.am,
spot/ltsmin/ltsmin.cc, spot/ltsmin/ltsmin.hh,
spot/ltsmin/spins_interface.cc, spot/ltsmin/spins_interface.hh,
spot/ltsmin/spins_kripke.hh, spot/ltsmin/spins_kripke.hxx,
spot/mc/Makefile.am, spot/mc/bloemen.hh, spot/mc/bloemen_ec.hh,
spot/mc/cndfs.hh, spot/mc/deadlock.hh, spot/mc/intersect.hh,
spot/mc/lpar13.hh, spot/mc/mc.hh, spot/mc/mc_instanciator.hh,
spot/mc/unionfind.cc, spot/mc/unionfind.hh, spot/mc/utils.hh,
spot/misc/Makefile.am, spot/misc/bareword.cc, spot/misc/bareword.hh,
spot/misc/bddlt.hh, spot/misc/bitset.cc, spot/misc/bitset.hh,
spot/misc/bitvect.cc, spot/misc/bitvect.hh, spot/misc/casts.hh,
spot/misc/clz.hh, spot/misc/common.hh, spot/misc/escape.cc,
spot/misc/escape.hh, spot/misc/fixpool.hh, spot/misc/formater.cc,
spot/misc/formater.hh, spot/misc/hash.hh, spot/misc/hashfunc.hh,
spot/misc/intvcmp2.cc, spot/misc/intvcmp2.hh, spot/misc/intvcomp.cc,
spot/misc/intvcomp.hh, spot/misc/ltstr.hh, spot/misc/memusage.cc,
spot/misc/memusage.hh, spot/misc/minato.cc, spot/misc/minato.hh,
spot/misc/mspool.hh, spot/misc/optionmap.cc, spot/misc/optionmap.hh,
spot/misc/random.cc, spot/misc/random.hh, spot/misc/satsolver.cc,
spot/misc/satsolver.hh, spot/misc/timer.cc, spot/misc/timer.hh,
spot/misc/tmpfile.cc, spot/misc/tmpfile.hh, spot/misc/trival.hh,
spot/misc/version.cc, spot/misc/version.hh, spot/parseaut/Makefile.am,
spot/parseaut/fmterror.cc, spot/parseaut/parseaut.yy,
spot/parseaut/parsedecl.hh, spot/parseaut/public.hh,
spot/parseaut/scanaut.ll, spot/parsetl/Makefile.am,
spot/parsetl/fmterror.cc, spot/parsetl/parsedecl.hh,
spot/parsetl/parsetl.yy, spot/parsetl/scantl.ll,
spot/priv/Makefile.am, spot/priv/accmap.hh, spot/priv/bddalloc.cc,
spot/priv/bddalloc.hh, spot/priv/freelist.cc, spot/priv/freelist.hh,
spot/priv/partitioned_relabel.cc, spot/priv/partitioned_relabel.hh,
spot/priv/satcommon.cc, spot/priv/satcommon.hh, spot/priv/trim.cc,
spot/priv/trim.hh, spot/priv/weight.cc, spot/priv/weight.hh,
spot/ta/Makefile.am, spot/ta/ta.cc, spot/ta/ta.hh,
spot/ta/taexplicit.cc, spot/ta/taexplicit.hh, spot/ta/taproduct.cc,
spot/ta/taproduct.hh, spot/ta/tgta.hh, spot/ta/tgtaexplicit.cc,
spot/ta/tgtaexplicit.hh, spot/ta/tgtaproduct.cc,
spot/ta/tgtaproduct.hh, spot/taalgos/Makefile.am, spot/taalgos/dot.cc,
spot/taalgos/dot.hh, spot/taalgos/emptinessta.cc,
spot/taalgos/emptinessta.hh, spot/taalgos/minimize.cc,
spot/taalgos/minimize.hh, spot/taalgos/reachiter.cc,
spot/taalgos/reachiter.hh, spot/taalgos/statessetbuilder.cc,
spot/taalgos/statessetbuilder.hh, spot/taalgos/stats.cc,
spot/taalgos/stats.hh, spot/taalgos/tgba2ta.cc,
spot/taalgos/tgba2ta.hh, spot/tl/Makefile.am, spot/tl/apcollect.cc,
spot/tl/apcollect.hh, spot/tl/contain.cc, spot/tl/contain.hh,
spot/tl/declenv.cc, spot/tl/declenv.hh, spot/tl/defaultenv.cc,
spot/tl/defaultenv.hh, spot/tl/dot.cc, spot/tl/dot.hh,
spot/tl/environment.hh, spot/tl/exclusive.cc, spot/tl/exclusive.hh,
spot/tl/formula.cc, spot/tl/formula.hh, spot/tl/hierarchy.cc,
spot/tl/hierarchy.hh, spot/tl/length.cc, spot/tl/length.hh,
spot/tl/ltlf.cc, spot/tl/ltlf.hh, spot/tl/mark.cc, spot/tl/mark.hh,
spot/tl/mutation.cc, spot/tl/mutation.hh, spot/tl/nenoform.cc,
spot/tl/nenoform.hh, spot/tl/parse.hh, spot/tl/print.cc,
spot/tl/print.hh, spot/tl/randomltl.cc, spot/tl/randomltl.hh,
spot/tl/relabel.cc, spot/tl/relabel.hh, spot/tl/remove_x.cc,
spot/tl/remove_x.hh, spot/tl/simplify.cc, spot/tl/simplify.hh,
spot/tl/snf.cc, spot/tl/snf.hh, spot/tl/sonf.cc, spot/tl/sonf.hh,
spot/tl/unabbrev.cc, spot/tl/unabbrev.hh, spot/twa/Makefile.am,
spot/twa/acc.cc, spot/twa/acc.hh, spot/twa/bdddict.cc,
spot/twa/bdddict.hh, spot/twa/bddprint.cc, spot/twa/bddprint.hh,
spot/twa/formula2bdd.cc, spot/twa/formula2bdd.hh, spot/twa/fwd.hh,
spot/twa/taatgba.cc, spot/twa/taatgba.hh, spot/twa/twa.cc,
spot/twa/twa.hh, spot/twa/twagraph.cc, spot/twa/twagraph.hh,
spot/twa/twaproduct.cc, spot/twa/twaproduct.hh,
spot/twaalgos/Makefile.am, spot/twaalgos/aiger.cc,
spot/twaalgos/aiger.hh, spot/twaalgos/alternation.cc,
spot/twaalgos/alternation.hh, spot/twaalgos/are_isomorphic.cc,
spot/twaalgos/are_isomorphic.hh, spot/twaalgos/bfssteps.cc,
spot/twaalgos/bfssteps.hh, spot/twaalgos/canonicalize.cc,
spot/twaalgos/canonicalize.hh, spot/twaalgos/cleanacc.cc,
spot/twaalgos/cleanacc.hh, spot/twaalgos/cobuchi.cc,
spot/twaalgos/cobuchi.hh, spot/twaalgos/complement.cc,
spot/twaalgos/complement.hh, spot/twaalgos/complete.cc,
spot/twaalgos/complete.hh, spot/twaalgos/compsusp.cc,
spot/twaalgos/compsusp.hh, spot/twaalgos/contains.cc,
spot/twaalgos/contains.hh, spot/twaalgos/copy.hh,
spot/twaalgos/couvreurnew.cc, spot/twaalgos/couvreurnew.hh,
spot/twaalgos/cycles.cc, spot/twaalgos/cycles.hh,
spot/twaalgos/dbranch.cc, spot/twaalgos/dbranch.hh,
spot/twaalgos/degen.cc, spot/twaalgos/degen.hh,
spot/twaalgos/determinize.cc, spot/twaalgos/determinize.hh,
spot/twaalgos/dot.cc, spot/twaalgos/dot.hh, spot/twaalgos/dtbasat.cc,
spot/twaalgos/dtbasat.hh, spot/twaalgos/dtwasat.cc,
spot/twaalgos/dtwasat.hh, spot/twaalgos/dualize.cc,
spot/twaalgos/dualize.hh, spot/twaalgos/emptiness.cc,
spot/twaalgos/emptiness.hh, spot/twaalgos/emptiness_stats.hh,
spot/twaalgos/forq_contains.cc, spot/twaalgos/forq_contains.hh,
spot/twaalgos/game.cc, spot/twaalgos/game.hh, spot/twaalgos/genem.cc,
spot/twaalgos/genem.hh, spot/twaalgos/gfguarantee.cc,
spot/twaalgos/gfguarantee.hh, spot/twaalgos/gtec/Makefile.am,
spot/twaalgos/gtec/ce.cc, spot/twaalgos/gtec/ce.hh,
spot/twaalgos/gtec/gtec.cc, spot/twaalgos/gtec/gtec.hh,
spot/twaalgos/gtec/sccstack.cc, spot/twaalgos/gtec/sccstack.hh,
spot/twaalgos/gtec/status.cc, spot/twaalgos/gtec/status.hh,
spot/twaalgos/gv04.cc, spot/twaalgos/gv04.hh, spot/twaalgos/hoa.cc,
spot/twaalgos/hoa.hh, spot/twaalgos/iscolored.cc,
spot/twaalgos/iscolored.hh, spot/twaalgos/isdet.cc,
spot/twaalgos/isdet.hh, spot/twaalgos/isunamb.cc,
spot/twaalgos/isunamb.hh, spot/twaalgos/isweakscc.cc,
spot/twaalgos/isweakscc.hh, spot/twaalgos/langmap.cc,
spot/twaalgos/langmap.hh, spot/twaalgos/lbtt.cc,
spot/twaalgos/lbtt.hh, spot/twaalgos/ltl2taa.cc,
spot/twaalgos/ltl2taa.hh, spot/twaalgos/ltl2tgba_fm.cc,
spot/twaalgos/ltl2tgba_fm.hh, spot/twaalgos/magic.cc,
spot/twaalgos/magic.hh, spot/twaalgos/mask.cc, spot/twaalgos/mask.hh,
spot/twaalgos/mealy_machine.cc, spot/twaalgos/mealy_machine.hh,
spot/twaalgos/minimize.cc, spot/twaalgos/minimize.hh,
spot/twaalgos/ndfs_result.hxx, spot/twaalgos/neverclaim.cc,
spot/twaalgos/neverclaim.hh, spot/twaalgos/parity.cc,
spot/twaalgos/parity.hh, spot/twaalgos/postproc.cc,
spot/twaalgos/postproc.hh, spot/twaalgos/powerset.cc,
spot/twaalgos/powerset.hh, spot/twaalgos/product.cc,
spot/twaalgos/product.hh, spot/twaalgos/randomgraph.cc,
spot/twaalgos/randomgraph.hh, spot/twaalgos/randomize.cc,
spot/twaalgos/randomize.hh, spot/twaalgos/reachiter.cc,
spot/twaalgos/reachiter.hh, spot/twaalgos/relabel.cc,
spot/twaalgos/relabel.hh, spot/twaalgos/remfin.cc,
spot/twaalgos/remfin.hh, spot/twaalgos/remprop.cc,
spot/twaalgos/remprop.hh, spot/twaalgos/sbacc.cc,
spot/twaalgos/sbacc.hh, spot/twaalgos/sccfilter.cc,
spot/twaalgos/sccfilter.hh, spot/twaalgos/sccinfo.cc,
spot/twaalgos/sccinfo.hh, spot/twaalgos/se05.cc,
spot/twaalgos/se05.hh, spot/twaalgos/sepsets.cc,
spot/twaalgos/sepsets.hh, spot/twaalgos/simulation.cc,
spot/twaalgos/simulation.hh, spot/twaalgos/split.cc,
spot/twaalgos/split.hh, spot/twaalgos/stats.cc,
spot/twaalgos/stats.hh, spot/twaalgos/strength.cc,
spot/twaalgos/strength.hh, spot/twaalgos/stripacc.cc,
spot/twaalgos/stripacc.hh, spot/twaalgos/stutter.cc,
spot/twaalgos/stutter.hh, spot/twaalgos/sum.cc, spot/twaalgos/sum.hh,
spot/twaalgos/synthesis.cc, spot/twaalgos/synthesis.hh,
spot/twaalgos/tau03.cc, spot/twaalgos/tau03.hh,
spot/twaalgos/tau03opt.cc, spot/twaalgos/tau03opt.hh,
spot/twaalgos/toparity.cc, spot/twaalgos/toparity.hh,
spot/twaalgos/totgba.cc, spot/twaalgos/totgba.hh,
spot/twaalgos/toweak.cc, spot/twaalgos/toweak.hh,
spot/twaalgos/translate.cc, spot/twaalgos/translate.hh,
spot/twaalgos/word.cc, spot/twaalgos/word.hh,
spot/twaalgos/zlktree.cc, spot/twaalgos/zlktree.hh,
spot/twacube/Makefile.am, spot/twacube/cube.cc, spot/twacube/cube.hh,
spot/twacube/fwd.hh, spot/twacube/twacube.cc, spot/twacube/twacube.hh,
spot/twacube_algos/Makefile.am, spot/twacube_algos/convert.cc,
spot/twacube_algos/convert.hh, tests/Makefile.am, tests/core/385.test,
tests/core/500.test, tests/core/521.test, tests/core/522.test,
tests/core/acc.cc, tests/core/acc.test, tests/core/acc2.test,
tests/core/acc_word.test, tests/core/accsimpl.test,
tests/core/alternating.test, tests/core/autcross.test,
tests/core/autcross2.test, tests/core/autcross3.test,
tests/core/autcross4.test, tests/core/autcross5.test,
tests/core/babiak.test, tests/core/bare.test, tests/core/basimul.test,
tests/core/bdd.test, tests/core/bdddict.cc, tests/core/bdddict.test,
tests/core/bitvect.cc, tests/core/bitvect.test, tests/core/bricks.cc,
tests/core/bricks.test, tests/core/checkpsl.cc, tests/core/checkta.cc,
tests/core/complement.test, tests/core/complementation.test,
tests/core/complete.test, tests/core/consterm.cc,
tests/core/consterm.test, tests/core/cube.cc, tests/core/cube.test,
tests/core/cycles.test, tests/core/dbacomp.test, tests/core/dca.test,
tests/core/dca2.test, tests/core/defs.in, tests/core/degendet.test,
tests/core/degenid.test, tests/core/degenlskip.test,
tests/core/degenscc.test, tests/core/det.test, tests/core/dfs.test,
tests/core/dnfstreett.test, tests/core/dot2tex.test,
tests/core/dra2dba.test, tests/core/dstar.test,
tests/core/dualize.test, tests/core/dupexp.test,
tests/core/emptchk.cc, tests/core/emptchk.test,
tests/core/emptchke.test, tests/core/emptchkr.test,
tests/core/equals.test, tests/core/equalsf.cc,
tests/core/eventuniv.test, tests/core/exclusive-ltl.test,
tests/core/exclusive-tgba.test, tests/core/explpro2.test,
tests/core/explpro3.test, tests/core/explpro4.test,
tests/core/explprod.test, tests/core/explsum.test,
tests/core/format.test, tests/core/full.test, tests/core/gamehoa.test,
tests/core/genaut.test, tests/core/genltl.test,
tests/core/gragsa.test, tests/core/graph.cc, tests/core/graph.test,
tests/core/hierarchy.test, tests/core/highlightstate.test,
tests/core/ikwiad.cc, tests/core/included.test,
tests/core/intvcmp2.cc, tests/core/intvcomp.cc,
tests/core/intvcomp.test, tests/core/isomorph.test,
tests/core/isop.test, tests/core/kind.cc, tests/core/kind.test,
tests/core/kripke.test, tests/core/kripkecat.cc,
tests/core/latex.test, tests/core/lbt.test, tests/core/lbttparse.test,
tests/core/length.cc, tests/core/length.test, tests/core/lenient.test,
tests/core/ltl2dstar.test, tests/core/ltl2dstar2.test,
tests/core/ltl2dstar3.test, tests/core/ltl2dstar4.test,
tests/core/ltl2neverclaim-lbtt.test, tests/core/ltl2neverclaim.test,
tests/core/ltl2ta.test, tests/core/ltl2ta2.test,
tests/core/ltl2tgba.test, tests/core/ltl2tgba2.test,
tests/core/ltl3ba.test, tests/core/ltl3dra.test,
tests/core/ltlcounter.test, tests/core/ltlcross.test,
tests/core/ltlcross2.test, tests/core/ltlcross3.test,
tests/core/ltlcross4.test, tests/core/ltlcross5.test,
tests/core/ltlcross6.test, tests/core/ltlcrossce.test,
tests/core/ltlcrossce2.test, tests/core/ltlcrossgrind.test,
tests/core/ltldo.test, tests/core/ltldo2.test, tests/core/ltlf.test,
tests/core/ltlfilt.test, tests/core/ltlgrind.test,
tests/core/ltlrel.cc, tests/core/ltlrel.test,
tests/core/ltlsynt-pgame.test, tests/core/ltlsynt.test,
tests/core/ltlsynt2.test, tests/core/lunabbrev.test,
tests/core/maskacc.test, tests/core/maskkeep.test,
tests/core/mempool.cc, tests/core/mempool.test, tests/core/minterm.cc,
tests/core/minterm.test, tests/core/minusx.test,
tests/core/monitor.test, tests/core/nenoform.test,
tests/core/neverclaimread.test, tests/core/ngraph.cc,
tests/core/ngraph.test, tests/core/nondet.test,
tests/core/obligation.test, tests/core/optba.test,
tests/core/parity.cc, tests/core/parity.test, tests/core/parity2.test,
tests/core/parse.test, tests/core/parseaut.test,
tests/core/parseerr.test, tests/core/pdegen.test,
tests/core/pgsolver.test, tests/core/prodchain.test,
tests/core/prodor.test, tests/core/rabin2parity.test,
tests/core/rand.test, tests/core/randaut.test,
tests/core/randomize.test, tests/core/randpsl.test,
tests/core/randtgba.cc, tests/core/randtgba.test,
tests/core/readltl.cc, tests/core/readsave.test, tests/core/reduc.cc,
tests/core/reduc.test, tests/core/reduc0.test,
tests/core/reduccmp.test, tests/core/reducpsl.test,
tests/core/remfin.test, tests/core/remove_x.test,
tests/core/remprop.test, tests/core/renault.test, tests/core/safra.cc,
tests/core/safra.test, tests/core/satmin.test,
tests/core/satmin2.test, tests/core/satmin3.test,
tests/core/sbacc.test, tests/core/scc.test, tests/core/sccdot.test,
tests/core/sccif.cc, tests/core/sccif.test, tests/core/sccsimpl.test,
tests/core/semidet.test, tests/core/sepsets.test,
tests/core/serial.test, tests/core/sim2.test, tests/core/sim3.test,
tests/core/sonf.test, tests/core/split.test, tests/core/spotlbtt.test,
tests/core/spotlbtt2.test, tests/core/streett.test,
tests/core/strength.test, tests/core/stutter-ltl.test,
tests/core/stutter-tgba.test, tests/core/sugar.test,
tests/core/syfco.test, tests/core/syntimpl.cc,
tests/core/syntimpl.test, tests/core/taatgba.cc,
tests/core/taatgba.test, tests/core/tgbagraph.test,
tests/core/tostring.cc, tests/core/tostring.test,
tests/core/tripprod.test, tests/core/trival.cc,
tests/core/trival.test, tests/core/tunabbrev.test,
tests/core/tunenoform.test, tests/core/twacube.cc,
tests/core/twacube.test, tests/core/twagraph.cc,
tests/core/unabbrevwm.test, tests/core/unambig.test,
tests/core/unambig2.test, tests/core/uniq.test, tests/core/utf8.test,
tests/core/uwrm.test, tests/core/wdba.test, tests/core/wdba2.test,
tests/ltsmin/check.test, tests/ltsmin/check2.test,
tests/ltsmin/check3.test, tests/ltsmin/finite.test,
tests/ltsmin/finite2.test, tests/ltsmin/finite3.test,
tests/ltsmin/kripke.test, tests/ltsmin/modelcheck.cc,
tests/ltsmin/testconvert.cc, tests/ltsmin/testconvert.test,
tests/python/298.py, tests/python/341.py, tests/python/471.py,
tests/python/acc.py, tests/python/accparse2.py, tests/python/aiger.py,
tests/python/alarm.py, tests/python/aliases.py,
tests/python/alternating.py, tests/python/bdddict.py,
tests/python/bdditer.py, tests/python/bddnqueen.py,
tests/python/bugdet.py, tests/python/complement_semidet.py,
tests/python/dbranch.py, tests/python/declenv.py,
tests/python/decompose_scc.py, tests/python/det.py,
tests/python/dualize.py, tests/python/ecfalse.py,
tests/python/except.py, tests/python/forq_contains.py,
tests/python/game.py, tests/python/gen.py, tests/python/genem.py,
tests/python/implies.py, tests/python/interdep.py,
tests/python/intrun.py, tests/python/kripke.py,
tests/python/langmap.py, tests/python/ltl2tgba.py,
tests/python/ltl2tgba.test, tests/python/ltlf.py,
tests/python/ltlparse.py, tests/python/ltlsimple.py,
tests/python/mealy.py, tests/python/merge.py,
tests/python/mergedge.py, tests/python/minato.py,
tests/python/misc-ec.py, tests/python/optionmap.py,
tests/python/origstate.py, tests/python/otfcrash.py,
tests/python/parity.py, tests/python/parsetgba.py,
tests/python/pdegen.py, tests/python/powerset.py,
tests/python/prodexpt.py, tests/python/randgen.py,
tests/python/relabel.py, tests/python/remfin.py,
tests/python/removeap.py, tests/python/rs_like.py,
tests/python/satmin.py, tests/python/sbacc.py,
tests/python/sccfilter.py, tests/python/sccinfo.py,
tests/python/sccsplit.py, tests/python/semidet.py,
tests/python/setacc.py, tests/python/setxor.py,
tests/python/simplacc.py, tests/python/simstate.py,
tests/python/sonf.py, tests/python/split.py,
tests/python/splitedge.py, tests/python/streett_totgba.py,
tests/python/streett_totgba2.py, tests/python/stutter.py,
tests/python/sum.py, tests/python/synthesis.py,
tests/python/toparity.py, tests/python/toweak.py,
tests/python/tra2tba.py, tests/python/trival.py,
tests/python/twagraph.py, tests/python/zlktree.py, tests/run.in,
tests/sanity/80columns.test, tests/sanity/bin.test,
tests/sanity/getenv.test, tests/sanity/includes.test,
tests/sanity/ipynb.pl, tests/sanity/namedprop.test,
tests/sanity/private.test, tests/sanity/readme.pl,
tests/sanity/style.test, tools/man2html.pl: Update all copyright
headers.

AUTHORS

@@ -1,33 +1,101 @@
 The following people have contributed code to Spot:
 
-Ala-Eddine Ben-Salem
-Alexandre Duret-Lutz
-Alexandre Gbaguidi Aïsse
-Alexandre Lewkowicz
-Amaury Fauchille
-Antoine Martin
-Arthur Remaud
-Clément Gillard
-Damien Lefortier
-Denis Poitrenaud
-Elie Abi Saad
-Étienne Renault
-Félix Abecassis
-Florian Renkin
-Guillaume Sadegh
-Heikki Tauriainen
-Henrich Lauko
-Jérôme Dubois
-Jonah Romero
-Laurent Xu
-Maximilien Colange
-Philipp Schlehuber
-Pierre Parutto
-Rachid Rebiha
-Souheib Baarir
-Thibaud Michaud
-Thomas Badie
-Thomas Martinez
-Thomas Medioni
-Tomáš Babiak
-Vincent Tourneur
+- Ala-Eddine Ben-Salem (2010-2012)
+  During is PhD thesis at EPITA.
+
+- Alexandre Duret-Lutz (2002-)
+  During his master and then PhD at Université Pierre et Marie Curie.
+  Then as an employee of EPITA.
+
+- Alexandre Gbaguidi Aïsse (2016-2017)
+  While a student at EPITA.
+
+- Alexandre Lewkowicz (2014-2016)
+  While a student at EPITA.
+
+- Amaury Fauchille (2016)
+  While a student at EPITA.
+
+- Antoine Martin (2018-)
+  While a student at EPITA, and then during his PhD at EPITA.
+
+- Arthur Remaud (2017)
+  While a student at EPITA.
+
+- Clément Gillard (2017-2019)
+  While a student at EPITA.
+
+- Damien Lefortier (2008-2010)
+  While a student at EPITA.
+
+- Denis Poitrenaud (2004-2005)
+  As an employee of Univesité Paris V.
+
+- Elie Abi Saad (2013)
+  While a student at EPITA.
+
+- Étienne Renault (2013-2020)
+  During his PhD at EPITA & Université Pierre et Marie Curie.
+  Then as an employee of EPITA.
+
+- Félix Abecassis (2009-2010)
+  While a student at EPITA.
+
+- Florian Perlié-Long (2017)
+  While a student at EPITA.
+
+- Florian Renkin (2020-)
+  During his PhD at EPITA.
+  Then as an employee of Université Paris Cité.
+
+- Guillaume Sadegh (2008-2010)
+  While a student at EPITA.
+
+- Heikki Tauriainen (2004-2005)
+  During his PhD at Helsinki University of Technology.
+
+- Henrich Lauko (2017)
+  As an ERASMUS student from Masaryk University (Brno) visiting EPITA.
+
+- Jérôme Dubois (2020-2021)
+  While a student at EPITA.
+
+- Jonah Romero (2023)
+  During an internship at IMDEA Software Institute, supervised by Pierre Ganty.
+
+- Laurent Xu (2016-2017)
+  While a student at EPITA.
+
+- Maximilien Colange (2016-2018)
+  As an employee of EPITA.
+
+- Philipp Schlehuber (2020-)
+  As an employee of EPITA.
+
+- Pierre Parutto (2012)
+  While a student at EPITA.
+
+- Rachid Rebiha (2003)
+  During his master's internship at Université Pierre et Marie Curie.
+
+- Souheib Baarir (2004, 2008, 2013)
+  During his PhD at Université Pierre et Marie Curie.
+  Then during a sabatical visit at EPITA.
+
+- Thibaud Michaud (2014, 2017)
+  While a student at EPITA.
+
+- Thomas Badie  (2011-2013)
+  While a student at EPITA.
+
+- Thomas Martinez (2004)
+  While a student at EPITA.
+
+- Thomas Medioni (2017)
+  During a master internship done at EPITA.
+
+- Tomáš Babiak (2012)
+  During his PHD at Masaryk University (Brno).
+
+- Vincent Tourneur (2017)
+  While a student at EPITA.