Producing state-based acceptance is now part of the postprocessing
routines.  That means we can more easily simplify automata with
state-based acceptance (using autfilt -S --small --high, for instance)
and as as side-effect, ltl2tgba can produce GBA.  However the result of
ltl2tgba -S is often larger than that of ltl2tgba -B.

* src/twaalgos/postproc.cc, src/twaalgos/postproc.hh: Implement
the SBAcc option.
* src/bin/common_post.cc, src/bin/common_post.hh: Implement -S.
* src/bin/autfilt.cc, src/bin/dstar2tgba.cc, src/bin/ltl2tgba.cc,
src/bin/ltl2tgta.cc, src/bin/ltldo.cc: Adjust.
* src/tests/sim3.test: Augment test case.
* NEWS, doc/org/ltl2tgba.org, doc/org/autfilt.org: Document it -S.

* src/twaalgos/minimize.cc, src/twaalgos/safety.cc,
src/twaalgos/safety.hh: Adjust.
* src/tests/wdba2.test: More tests.

* src/twaalgos/simulation.cc, src/twaalgos/simulation.hh: Adjust
to work on TωA.  This only require separate acceptance sets.
* src/tests/sim3.test: New test.
* src/tests/Makefile.am: Add it.

* src/bin/ltldo.cc: Default to generic acceptance.
* src/tests/ltl2dstar.test: Add a test.

* src/twaalgos/sepsets.cc, src/twaalgos/sepsets.hh: New files.
* src/twaalgos/Makefile.am: Add them.
* src/twa/acc.hh (get_acceptance): Add a non-const version.
* src/bin/autfilt.cc: Add the --separate-sets option.
* src/tests/sepsets.test: New file.
* src/tests/Makefile.am: Add it.

* src/twaalgos/sccinfo.cc, src/twaalgos/sccinfo.hh
(determine_unknown_acceptance): New function to call explicitly
in case one want to know whether the accepting/rejecting status
of all SCCs regardless of the acceptance.
* src/twaalgos/dotty.cc src/twaalgos/sccfilter.cc,
src/twaalgos/sccfilter.hh: Use it.
* src/tests/unambig.test, src/tests/sccdot.test: Add more tests.
* doc/org/oaut.org: Adjust doc for --dot=s, orange is not output
anymore.

Note however that scc_info does not provide a precise accept/reject
characterization for SCCs when using Fin acceptance.  However whenever
it tells that an SCC is rejecting, scc_filter_states() may safely remove
it.

* src/twaalgos/sccfilter.cc (scc_filter_states): Allow on any TωA.
(scc_filter): Only use acceptance simplifications on TGBA.
* src/tests/unambig.test: Add a co-Büchi test.

* doc/org/.dir-locals.el, doc/org/init.el.in: Use 'B' instead of 'b' for
default Dot output.
* doc/org/oaut.org: Adjust.
* NEWS, doc/org/ltl2tgba.org: Document -U.
* src/bin/common_post.cc, src/bin/ltl2tgba.cc: Fix location of help text
for -U.

* src/twaalgos/ltl2tgba_fm.cc: Fix the PSL operators.
* src/tests/unambig.test: Add more tests.

* src/twa/twagraph.cc, src/twa/twagraph.hh (create_formula_namer,
release_formula_namer): New functions.
* src/twaalgos/ltl2tgba_fm.cc: Use it.

* src/bin/common_aoutput.cc: Add --check=unambiguous.
* src/twa/twa.hh: New unambiguous property.
* src/twaalgos/hoa.cc: Print it.
* src/twaalgos/ltl2tgba_fm.cc: Set it.
* src/twaalgos/isunamb.cc, src/twaalgos/isunamb.hh
(check_unambiguous): New function.
* src/tests/unambig.test: More tests.

* src/twaalgos/isunamb.hh, src/twaalgos/isunamb.cc: New files.
* src/twaalgos/Makefile.am: Add them.
* src/tests/unambig.test: New file.
* src/tests/Makefile.am: Add it.
* src/bin/ltlcross.cc: Record whether each produced automaton is
ambiguous.
* src/bin/autfilt.cc: Add a --is-unambiguous option.
* NEWS: Mention it.

* src/twaalgos/ltl2tgba_fm.hh, src/twaalgos/ltl2tgba_fm.cc: Implement
generation of unambiguous automata.
* src/tests/ltl2tgba.cc: Add option -fu to test it.
* src/bin/common_post.cc: Adjust the group of options so we can easily
add more from ltl2tgba.cc.
* src/bin/ltl2tgba.cc: Add support for -U and --unambigous.
* src/twaalgos/translate.cc, src/twaalgos/translate.hh: Add support
for Unambiguous.
* src/tests/ltlcross.test, src/tests/ltlcross2.test: Test both
bin/ltl2tgba and tgbatest/ltl2tgba.
* NEWS: Mention the change.

* src/ltlvisit/mutation.cc: Do not bindly rewrite e[]->f and
e<>->f as e, since e is not a valid PSL formula.  Use !{e}
and {e} instead.  Also fix a memory leak in the handling of
bunops, discovered while testing the previous change.
* src/tests/ltlgrind.test: Add a test case.

* doc/org/ioltl.org: Add an example with xargs -0.
* src/bin/common_aoutput.hh (statistics): Do not print nullptr if %F is
empty.

* src/bin/common_output.cc: Add option -0.
* src/tests/ltlfilt.test: Test it.
* NEWS: Document it.

* src/twa/twa.hh: Support this new property.
* src/twaalgos/stutter.cc: Set it if needed.
* src/twaalgos/hoa.cc: Output it.
* src/tests/stutter-tgba.test: More tests.

This currently only allows extra check for stutter invariance.

* src/bin/common_aoutput.cc: Add check option,
and test stutter invariance.
* src/twaalgos/stutter.cc, src/twaalgos/stutter.hh
(check_stutter_invariance): New function.
* src/tests/stutter-tgba.test: Test it.

This addresses the easy part of #79.

* src/twaalgos/postproc.cc: If the input is already BA and we want a BA
as output, do not try the transition-based simulation only to
degeneralize the result.
* src/tests/optba.test: New file.
* src/tests/Makefile.am: Add it.

* src/hoaparse/hoaparse.yy: Do not check initial alternating state
number until we support alternation.
* src/tests/hoaparse.test: Add a test case.

* src/twaalgos/dotty.cc: Add an option (e) to force elliptic shape, and
a heuristic to choose between circle and ellipse by default.
* src/bin/common_aoutput.cc, src/bin/dstar2tgba.cc: Document 'e'.
* src/taalgos/dotty.cc: Ignore 'e'.
* wrap/python/spot.py (setup): Do not force circular states.  The
default should be fine.
* src/tests/det.test, src/tests/dstar.test, src/tests/monitor.test,
src/tests/neverclaimread.test, src/tests/readsave.test,
src/tests/sccdot.test, src/tests/tgbagraph.test: Adjust expected
results.
* NEWS: Adjust.

* src/twaalgos/dotty.cc: Add option 'B'.
* src/taalgos/dotty.cc: Ignore it.
* src/bin/common_aoutput.cc, src/bin/dstar2tgba.cc: Document it.
* wrap/python/spot.py (setup): Use it by default, and rewrite
the function to be a bit more flexible.
* wrap/python/tests/automata-io.ipynb, wrap/python/tests/automata.ipynb,
wrap/python/tests/piperead.ipynb, wrap/python/tests/randaut.ipynb,
wrap/python/tests/testingaut.ipynb: Use setup() everywhere.

Fixes #78.

* src/twaalgos/dotty.cc: Add option '1'.
* src/taalgos/dotty.cc: Ignore '1'.
* src/bin/dstar2tgba.cc, src/bin/common_aoutput.cc: Document it.
* src/tests/readsave.test: Test it.

* src/bin/autfilt.cc: Fix it.
* src/tests/isomorph.test: Test it.

* src/hoaparse/public.hh, src/hoaparse/parsedecl.hh,
src/hoaparse/hoascan.ll, src/hoaparse/hoaparse.yy: Implement this new
interface.
* wrap/python/spot.py (automata): Use it when the argument contains
a newline.
* wrap/python/tests/automata-io.ipynb: Test it.

* iface/ltsmin/README: here.

* .cvsignore, bench/.cvsignore,
bench/emptchk/.cvsignore, bench/emptchk/models/.cvsignore,
bench/ltl2tgba/.cvsignore, buddy/.cvsignore,
buddy/doc/.cvsignore, buddy/examples/.cvsignore,
buddy/examples/adder/.cvsignore,
buddy/examples/bddcalc/.cvsignore,
buddy/examples/bddtest/.cvsignore,
buddy/examples/calculator/.cvsignore,
buddy/examples/cmilner/.cvsignore,
buddy/examples/fdd/.cvsignore,
buddy/examples/internal/.cvsignore,
buddy/examples/milner/.cvsignore,
buddy/examples/money/.cvsignore,
buddy/examples/queen/.cvsignore,
buddy/examples/solitare/.cvsignore,
buddy/src/.cvsignore, buddy/tools/.cvsignore,
doc/.cvsignore, iface/.cvsignore,
src/.cvsignore, src/ltlast/.cvsignore,
src/ltlenv/.cvsignore, src/ltlparse/.cvsignore,
src/ltlvisit/.cvsignore, src/misc/.cvsignore,
src/sanity/.cvsignore, src/tests/.cvsignore,
src/twa/.cvsignore, tools/.cvsignore,
wrap/.cvsignore, wrap/python/.cvsignore,
wrap/python/tests/.cvsignore: here.

*  src/tests/parse_print_test.cc: here.

* README, configure.ac, iface/ltsmin/Makefile.am,
src/tests/defs.in, src/tests/.gitignore, src/tests/Makefile.am,
src/Makefile.am: update references.
* src/kripketest/.gitignore, src/kripketest/Makefile.am,
src/kripketest/defs.in, src/graphtest/.gitignore,
src/graphtest/Makefile.am,
src/graphtest/defs.in, src/ltltest/.cvsignore,
src/ltltest/.gitignore, src/ltltest/Makefile.am,
src/ltltest/defs.in:: remove files.
* src/kripketest/bad_parsing.test, src/kripketest/kripke.test,
src/kripketest/origin, src/kripketest/parse_print_test.cc,
src/ltltest/bare.test, src/ltltest/consterm.cc,
src/ltltest/consterm.test, src/tests/defs.in,
src/ltltest/equals.test, src/ltltest/equalsf.cc,
src/ltltest/eventuniv.test, src/ltltest/exclusive-ltl.test,
src/graphtest/graph.cc, src/graphtest/graph.test,
src/ltltest/isop.test, src/ltltest/kind.cc,
src/ltltest/kind.test, src/ltltest/latex.test,
src/ltltest/lbt.test, src/ltltest/length.cc,
src/ltltest/length.test, src/ltltest/lenient.test,
src/ltltest/ltlcrossgrind.test, src/ltltest/ltlfilt.test,
src/ltltest/ltlgrind.test, src/ltltest/ltlrel.cc,
src/ltltest/ltlrel.test, src/ltltest/lunabbrev.test,
src/ltltest/nenoform.test, src/graphtest/ngraph.cc,
src/graphtest/ngraph.test, src/ltltest/parse.test,
src/ltltest/parseerr.test, src/ltltest/rand.test,
src/ltltest/readltl.cc, src/ltltest/reduc.cc,
src/ltltest/reduc.test, src/ltltest/reduc0.test,
src/ltltest/reduccmp.test, src/ltltest/reducpsl.test,
src/ltltest/remove_x.test, src/ltltest/stutter-ltl.test,
src/ltltest/syntimpl.cc, src/ltltest/syntimpl.test,
src/graphtest/tgbagraph.test, src/ltltest/tostring.cc,
src/ltltest/tostring.test, src/ltltest/tunabbrev.test,
src/ltltest/tunenoform.test, src/graphtest/twagraph.cc,
src/ltltest/unabbrevwm.test,src/ltltest/utf8.test,
src/ltltest/uwrm.test: rename as...
* src/tests/bad_parsing.test, src/tests/kripke.test,
src/tests/origin, src/tests/parse_print_test.cc,
src/tests/bare.test, src/tests/consterm.cc,
src/tests/consterm.test, src/tests/equals.test,
src/tests/equalsf.cc, src/tests/eventuniv.test,
src/tests/exclusive-ltl.test, src/tests/graph.cc,
src/tests/graph.test, src/tests/isop.test,
src/tests/kind.cc, src/tests/kind.test,
src/tests/latex.test, src/tests/lbt.test,
src/tests/length.cc, src/tests/length.test,
src/tests/lenient.test, src/tests/ltlcrossgrind.test,
src/tests/ltlfilt.test, src/tests/ltlgrind.test,
src/tests/ltlrel.cc, src/tests/ltlrel.test,
src/tests/lunabbrev.test, src/tests/nenoform.test,
src/tests/ngraph.cc, src/tests/ngraph.test,
src/tests/parse.test, src/tests/parseerr.test,
src/tests/rand.test, src/tests/readltl.cc,
src/tests/reduc.cc, src/tests/reduc.test,
src/tests/reduc0.test, src/tests/reduccmp.test,
src/tests/reducpsl.test, src/tests/remove_x.test,
src/tests/stutter-ltl.test, src/tests/syntimpl.cc,
src/tests/syntimpl.test, src/tests/tgbagraph.test,
src/tests/tostring.cc, src/tests/tostring.test,
src/tests/tunabbrev.test, src/tests/tunenoform.test,
src/tests/twagraph.cc, src/tests/unabbrevwm.test,
src/tests/utf8.test, src/tests/uwrm.test: ...these!

* src/Makefile.am, README, configure.ac: update references.
* src/tgbatest/: rename as...
* src/tests/: ...this!

* src/ltltest/Makefile.am, src/tgbatest/Makefile.am: update references.
* src/ltltest/exclusive.test, src/ltltest/stutter.test,
src/tgbatest/exclusive.test, src/tgbatest/stutter.test: rename as...
* src/ltltest/exclusive-ltl.test, src/ltltest/stutter-ltl.test,
src/tgbatest/exclusive-tgba.test,
src/tgbatest/stutter-tgba.test: ...these

* src/twa/bddprint.cc, src/twa/bddprint.hh (bdd_print_acc,
bdd_print_dot, bdd_print_table): Remove.

another catch by cppcheck

* src/misc/tmpfile.cc: Here.

as reported by cppcheck

* src/taalgos/emptinessta.cc, src/taalgos/tgba2ta.cc, src/twa/acc.cc,
src/twaalgos/minimize.cc, src/twaalgos/neverclaim.cc,
src/twaalgos/remprop.cc, src/twaalgos/sccinfo.cc: Here.