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Fixes #8.

* src/bin/dstar2tgba.cc: Here.

* src/dstarparse/dstarparse.yy, src/dstarparse/dstarscan.ll
src/dstarparse/parsedecl.hh, src/dstarparse/public.hh:
Adjust to return the same return types as parse_aut.
* src/dstarparse/fmterror.cc: Delete, we can use
the one of parse_aut.
* src/dstarparse/Makefile.am: Adjust.
* src/tests/ikwiad.cc, src/bin/dstar2tgba.cc,
src/bin/ltldo.cc: Adjust usage.
* src/bin/ltlcross.cc: The the result of dstar_parse() as-is, now that
it is a TωA like those produced by parse_aut().  As a consequence,
get rid of all the code storing statistics about the input
automaton.
* src/tests/ltlcross3.test, src/tests/ltl2dstar.test: Adjust expected
CSV output.
* doc/org/ltlcross.org, src/bin/man/ltlcross.x: Adjust to not
mention that %D performs a tranformation to Büchi.

Since we just removed that conversion, those can go as well.  Yay!

* src/tests/kv.test, src/twa/twamask.cc,
src/twa/twamask.hh, src/twa/twaproxy.cc,
src/twa/twaproxy.hh, src/twaalgos/scc.cc,
src/twaalgos/scc.hh: Delete.
* src/twaalgos/Makefile.am, src/twa/Makefile.am,
src/tests/Makefile.am, src/tests/ikwiad.cc: adjust.

* src/dstarparse/dstarparse.yy: Use the twa_graph_ptr to store the
acceptance condition.
* src/dstarparse/dra2ba.cc, src/dstarparse/dstar2tgba.cc,
src/dstarparse/nra2nba.cc, src/dstarparse/nsa2tgba.cc: Delete
all these conversion routines.
* src/dstarparse/public.hh, src/dstarparse/Makefile.am: Adjust.
* src/bin/dstar2tgba.cc: Adjust to call to_generalized_buchi()
instead.
* src/bin/ltlcross.cc: Adjust to call remove_fin() instead.
* src/bin/ltldo.cc: Use the parsed automaton as-is.
* src/tests/degenid.test, src/tests/dstar.test, src/tests/ikwiad.cc:
Adjust test cases.

I.e., automata that could be Rabin if we add some empty Fin(x) or full
Inf(y) sets.   This way it does not matter when remove_fin() is called
after cleanup_acceptance().

* src/twaalgos/remfin.cc: Implement that.
* src/tests/remfin.test: More tests.

Because using multiple acceptance condition is pointless in this case.

* src/twaalgos/remfin.cc (ra_to_ba): Extract most of the RA->BA code
into this new function for clarity.
* src/tests/remfin.test: Adjust.

* src/twaalgos/remfin.cc: Here.
* src/tests/remfin.test: Add a single test.
* src/twa/acc.hh (mark_t::lowest): New function.

* src/ltlparse/ltlscan.ll: Adjust parser.
* src/ltlvisit/print.cc: Adjust printer.
* src/tests/ltlfilt.test: Add some tests.
* NEWS: Mention it.

* doc/tl/tl.tex: Here.

* src/ltlvisit/mutation.cc, src/ltlvisit/relabel.cc,
src/ltlvisit/remove_x.cc: Add final keyword to final classes.

(Upcoming GCC 6.)

* src/misc/intvcmp2.cc: Here.
* NEWS: Mention it.

* src/bin/ltlfilt.cc: Add option --unabbreviate.
* src/tests/ltlfilt.test: Add a test case.
* NEWS: Mention it.

* src/ltlvisit/lunabbrev.cc, src/ltlvisit/lunabbrev.hh,
src/ltlvisit/tunabbrev.cc, src/ltlvisit/tunabbrev.hh,
src/ltlvisit/wmunabbrev.cc, src/ltlvisit/wmunabbrev.hh: Delete.
* src/ltlvisit/unabbrev.cc, src/ltlvisit/unabbrev.hh: New files.
* src/ltlvisit/Makefile.am: Adjust.
* src/ltlvisit/print.cc, src/tests/equalsf.cc, src/tests/Makefile.am,
src/twaalgos/ltl2taa.cc, wrap/python/spot_impl.i, src/bin/ltlfilt.cc:
Adjust callers.
* src/ltlvisit/contain.cc, src/tests/syntimpl.cc: Remove useless
include.
* wrap/python/tests/formulas.ipynb: New test cases.
* doc/tl/tl.tex: Group all rules in a single section.
* NEWS: Mention it.

Fixes #39, reported by Joachim Klein.

* src/ltlvisit/lunabbrev.hh, src/ltlvisit/lunabbrev.cc: Take an option
to specify which of xor/equiv/implies should be rewritten.
* src/ltlvisit/print.cc (print_spin): Rewrite only xor.
* src/tests/ltlfilt.test: Add a test case.
* NEWS: Mention this.

* src/twa/twagraph.hh (namer): Use a template alias instead
of a trait.
* src/twa/twagraph.cc, src/parseaut/parseaut.yy,
src/twaalgos/ltl2tgba_fm.cc: Adjust.

* src/twa/bdddict.cc, src/twa/bdddict.hh: Here.

* src/twaalgos/totgba.cc: Here.
* NEWS: Mention it.

We do not remove them in rejecting SCCs (as it might make the SCC
accepting), but we can remove them between SCCs.

Fixes #101.

* src/twaalgos/sccfilter.cc: Here.
* src/tests/sccsimpl.test: Add test case.
* NEWS: Mention this.

* src/ltlvisit/print.cc: Property output the double
quotes in latex mode, not only sclatex.
* src/misc/escape.cc: Fix LaTeX escape to work in math mode.
* src/tests/latex.test: Add a test.
* wrap/python/tests/formulas.ipynb: Adjust expected output
* NEWS: Mention the fix.

Fixes #100.

* doc/org/tut.org: Link to the notebook.
* src/sanity/ipynb.test: New test, to make sure we do not forget
to document ipython notebook when we add some.
* src/sanity/Makefile.am: Add it and run it.
* NEWS: Mention it.

* doc/Makefile.am (org-man): New target.
* tools/man2html.pl: Adjust to distinguish source and destination
directories.  Use relative links in genated files.
* NEWS: Mention the html man pages.

* src/bin/man/autfilt.x, src/bin/man/dstar2tgba.x,
src/bin/man/ltl2tgba.x, src/bin/man/ltlcross.x,
src/bin/man/ltlgrind.x, src/bin/man/randltl.x, src/bin/man/spot-x.x:
Improve typesetting and cross-references.
* tools/help2man: Adjust to better detect the optional arguments.
Detect options that are not separated from their description by two
spaces.  Argp output some of those.
* tools/man2html.pl: New file.
* Makefile.am: Distribute it.
* src/bin/ltlfilt.cc: Fix description of --define.
* src/bin/ltlgrind.cc: Fix duplicate description for --help and
--version.  Reorder --help output slightly.
* NEWS: Mention the few fixes.

* configure.ac: Use AC_CHECK_PROGS instead of AC_CHECK_PROG.

* doc/Makefile.am: If optipng is present, run it in dist-hook.

* doc/org/syntax.css: Delete this useless file.
* doc/org/spot.css: Cleanup.
* doc/org/init.el.in, doc/org/.dir-locals.el.in: Only load spot.css.
* doc/Makefile.am: Only distribute spot.css.

* configure.ac: Check for ipython.
* wrap/python/tests/Makefile.am (nb-html): New rule, using ipython.
* debian/control: Depend on ipython.
* debian/rules: Run nb-html.
* debian/python3-spot.examples: Install the genrated html files.