This was suggested by one of the reviewers of our LPAR'15 paper.

* src/twaalgos/dtgbasat.cc, src/twaalgos/dtgbasat.hh: Implement
the colored option.
* src/tests/satmin2.test: Test it.
* doc/org/satmin.org, NEWS: Document it.

* doc/org/dstar2tgba.org, doc/org/satmin.org: Here.

Also change http:// to https:// for url that would automatically
redirect to the later.

* doc/mainpage.dox, doc/org/dstar2tgba.org, doc/org/ltl2tgba.org,
doc/org/ltlcross.org, doc/org/satmin.org, doc/org/tools.org,
src/ltlvisit/dot.hh, src/misc/hashfunc.hh, wrap/python/ajax/trans.html:
Here.

* doc/org/satmin.org: Fix export.  We need both 'results: silent' and
'exports: both' for the code to be run and shown.

* doc/org/satmin.org: Do not use ":export code" on
code that must be run on export.

* doc/org/satmin.org: Here.

* doc/org/index.org, doc/org/ltl2tgta.org, doc/org/randltl.org,
doc/org/satmin.org, doc/org/tut.org, doc/org/tut01.org,
doc/org/tut02.org, doc/org/tut10.org, doc/org/tut20.org,
doc/org/tut21.org, doc/org/tut22.org: Here.

* doc/org/satmin.org: Document the new DTωA-minimization procedure.
* doc/org/tools.org: Fix link.
* src/bin/autfilt.cc: Pass -S to sat_minimize().
* src/twa/twagraph.hh: (state_acc_sets) New method.
* src/twaalgos/dotty.cc: Use it to correctly display co-Büchi automata.
* src/twaalgos/dtbasat.cc: Set the deterministic property on the result.
* src/twaalgos/dtgbasat.cc: Likewise, and preprocess the input automaton
in sat_minimize().
* src/twaalgos/dtgbasat.hh: Fix documentation, and take the state-based
information as an argument.
* src/twaalgos/postproc.cc: Do not call simulation-based reduction
on non-separated acceptances.
* src/tests/satmin2.test: Use -S rather than 'state-based'.
* NEWS: Update.

Fixes #62.

* src/tgbaalgos/dtbasat.cc, src/tgbaalgos/dtgbasat.cc: Add call to
prop_state_based_acc() when building an automaton with state-based
acceptance.
* src/tgbatest/satmin2.test: New test.
* doc/org/satmin.org: Update.

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/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.

The dotty output changed to be horizontal, and also
the acceptance sets are now numbers.

* doc/org/dstar2tgba.org, doc/org/ltl2tgba.org, doc/org/ltl2tgta.org,
doc/org/satmin.org: Adjust these four.

* 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.

* doc/org/satmin.org, src/bin/man/dstar2tgba.x, src/bin/man/ltl2tgba.x:
Cite the FORTE'14 paper.
* doc/org/tools.org, src/bin/man/ltl2tgba.x: Replace the VECOS'11
citation by IJCCBS'14.
* src/bin/man/ltl2tgba.x: Cite SPIN'13.

* src/misc/satsolver.cc: Add the "-model" option.
* NEWS, doc/org/satmin.org, src/bin/man/spot-x.x: Mention it.

* doc/org/satmin.org, src/bin/man/spot-x.x: Document it.
* NEWS: Mention it.

* doc/org/init.el.in: Center links.
* 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/randltl.org,
doc/org/satmin.org: Fix links.  Reported by Akim Demaille.

* doc/org/satmin.org, doc/org/satmin.tex: New files.
* doc/Makefile.am: Add them.
* doc/org/tools.org: Point to satmin.org.
* NEWS: Mention satmin.html.