* 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.

Suggested by Akim Demaille.  Fixes #69.

* doc/org/.dir-locals.el, doc/org/init.el.in,
wrap/python/tests/automata.ipynb: Set arrowhead and arrowsize.
* doc/org/autfilt.org, doc/org/dstar2tgba.org,
doc/org/ltl2tgba.org, doc/org/oaut.org: Adjust.

* doc/org/oaut.org: Some typos.
* doc/org/autfilt.org: Add some examples.

This implement several new options for --dot in order to
allow emptiness sets to be output as colored ⓿ or ❶...
Also add a SPOT_DOTDEFAULT environment variable.

* NEWS, src/bin/man/spot-x.x, src/bin/common_aoutput.cc,
src/bin/dstar2tgba.cc: Document the new options.
* doc/org/.dir-locals.el, doc/org/init.el.in: Setup
SPOT_DOTEXTRA and SPOT_DOTDEFAULT for all documents.
* doc/org/autfilt.org, doc/org/dstar2tgba.org, doc/org/ltl2tgba.org,
doc/org/ltldo.org, doc/org/oaut.org, doc/org/randaut.org,
doc/org/satmin.org: Adjust to this new setup.
* src/misc/escape.cc, src/misc/escape.hh (escape_html): New function.
* src/tgba/acc.cc, src/tgba/acc.hh (to_text, to_html): New method.
* src/tgbaalgos/dotty.cc: Implement the new options.
* src/tgbatest/readsave.test, wrap/python/tests/automata.ipynb: More
tests.
* wrap/python/spot.py: Make sure the default argument for
dotty_reachable is None, so that SPOT_DOTDEFAULT is honored.

* doc/org/oaut.org: Adjust the parameters of randaut so that we get a
mix of deterministic and nondeterministic automata.

Because scc_info does not perform a full emptiness check, it is not
always able to tell whether an SCC is accepting if the acceptance
condition use Fin primitives.  This introduce is_rejecting_scc() in
addition to to is_accepting_scc().  Only one of them may be true, but
they can both be false if scc_info has no idea whether the SCC is
accepting.

* src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh: Implement
is_rejecting_scc().
* src/bin/ltlcross.cc, src/tgba/acc.cc, src/tgba/acc.hh,
src/tgbaalgos/dtgbacomp.cc, src/tgbaalgos/isweakscc.cc,
src/tgbaalgos/remfin.cc, src/tgbaalgos/safety.cc,
src/tgbaalgos/sccfilter.cc: Use it.
* src/tgbaalgos/dotty.cc: Use is_rejecting_scc() and is_accepting_scc()
to color SCCs.
* doc/org/oaut.org: Document the colors used.
* src/tgbatest/neverclaimread.test, src/tgbatest/readsave.test: Adjust
tests.
* src/tgbatest/sccdot.test: New test case.
* src/tgbatest/Makefile.am: Add it.

* doc/org/oaut.org: Mention --dot=a.
* doc/org/autfilt.org: Update list of transformations.

Fixes #56.

* src/bin/common_aoutput.cc, src/bin/common_aoutput.hh,
src/bin/dstar2tgba.cc: Implement it.
* src/bin/autfilt.cc, src/bin/ltl2tgba.cc, src/bin/ltldo.cc,
src/bin/randaut.cc: Fix main() to catch exceptions from the
constructor of the automaton printer as well.
* src/tgbatest/randaut.test: Add a test case.
* doc/org/oaut.org: Document it.

Get rid of the output in Spot's format.

This finally fixes #1.

* src/tgbaalgos/save.cc, src/tgbaalgos/save.hh: Delete.
* src/tgbaalgos/Makefile.am: Adjust.
* src/ltlvisit/contain.cc: Remove useless includes.
* src/bin/dstar2tgba.cc, src/bin/common_aoutput.cc,
src/bin/common_aoutput.hh: Remove the "Spot" output.
* doc/org/dstar2tgba.org, doc/org/ioltl.org,
doc/org/ltl2tgba.org, doc/org/oaut.org: Update doc.
* NEWS: Mention that Spot i/o is gone.
* src/tgbatest/randtgba.cc: Output in HOA.
* src/tgbatest/randtgba.test: Use randaut instead of
randtgba.
* wrap/python/spot.i: Do not provide binding for save.hh

* doc/org/autfilt.org, doc/org/csv.org, doc/org/dstar2tgba.org,
doc/org/genltl.org, doc/org/ioltl.org, doc/org/ltl2tgba.org,
doc/org/ltlfilt.org, doc/org/ltlgrind.org, doc/org/oaut.org,
doc/org/randaut.org, doc/org/tools.org: Update.

Fixes #46.

* src/tgbaalgos/neverclaim.cc: Add option '6'.
* src/bin/common_aoutput.cc, src/bin/dstar2tgba.cc: Make it
possible to use the option.
* NEWS, doc/org/oaut.org: Document it.
* src/tgbatest/ltlcross2.test: Test it.

* doc/org/oaut.org: Show another way to perform the last computation.

* doc/org/setup.org: New file.
* doc/Makefile.am: Distribute it.
* doc/org/autfilt.org, doc/org/csv.org, doc/org/dstar2tgba.org,
doc/org/genltl.org, doc/org/ioltl.org, doc/org/ltl2tgba.org,
doc/org/ltl2tgta.org, doc/org/ltlcross.org, doc/org/ltlfilt.org,
doc/org/ltlgrind.org, doc/org/oaut.org, doc/org/randaut.org,
doc/org/randltl.org, doc/org/satmin.org, doc/org/tools.org: Use
setup.org.

* doc/org/autfilt.org, doc/org/csv.org, doc/org/dstar2tgba.org,
doc/org/genltl.org, doc/org/ioltl.org, doc/org/ltl2tgba.org,
doc/org/ltl2tgta.org, doc/org/ltlcross.org, doc/org/ltlfilt.org,
doc/org/ltlgrind.org, doc/org/oaut.org, doc/org/randaut.org,
doc/org/randltl.org, doc/org/satmin.org, doc/org/tools.org: Here.

* src/tgbaalgos/hoa.cc: Here.
* src/tgbatest/det.test, src/tgbatest/hoaparse.test,
src/tgbatest/monitor.test, doc/org/oaut.org: Adjust.

* doc/org/oaut.org: New file.
* doc/Makefile.am: Add it.
* doc/org/autfilt.org, doc/org/ltl2tgba.org, doc/org/randaut.org,
doc/org/tools.org: Link to it.