8734: fix doctests
2516: remove hack
2516: fix doctest
Use PPL for fan subdivision.
Fix doctests due to different facet ordering in PPL and PALP.
Deprecate Cone.lattice_polytope() and drop cache for Cone.polyhedron().
Merge branch 'develop' into ticket/16158-Spec_functor
quick fix
quick fix for smooth triangles too
Changed monomial_cmp to generator_cmp and added free (static)method to monoids and groups category.
Removed __contains__ and fix monomial_cmp in indexed_monoid.py
Merge branch 'develop' into public/monoids/15289-indexed

Conflicts:
	src/sage/algebras/free_algebra.py
Merge remote-tracking branch 'trac/develop' into ticket/11980
Misc fixes and tweaks.
Fix parents, domain, codomain and _composition_ isogenies.
don't use __str__ or __repr__ for tachyon string representations
fix doctests
more doctest fixes
assert_have_dot2tex should reraise exception
Merge branch 'develop' into ticket/15191-EuclideanDomains_tests

Conflicts:
	src/sage/categories/euclidean_domains.py
	src/sage/rings/polynomial/polynomial_quotient_ring.py