Merge branch 'fsm/state_color' into fsm/process_output_new

* fsm/state_color: (26 commits)
  inserted "parameter" in docstring of on_duplicate_transition_...
  docstring of quotient: added paragraph forgotten by merge; added blank line
  added one spaceing (PEP8)
  on_duplicate_transition=None as default
  corrected spacings (PEP8); rewritten long lines; corrected typos
  using relabeled instead of deepcopy (former TODO)
  corrected spacings (PEP8); rewrote long line
  small changes in docstring of _minimization_Moore_
  docstring in quotient adapted to the same style as equivalence classes
  description of equivalent states rewritten
  corrected spacings (PEP8); added line-breaks in long lines
  rewrote docstring of .__lt__ in FSMState/FSMTransition; corrected spacings
  Correct misplaced sentence in docstrings of accessible components and product_FiniteStateMachine
  Set color of new states in in product_FiniteStateMachine, composition_explorative, and determinisation.
  New attribute FSMState.color to prohibit merging in simplification
  sorted transitions in one doctest to guarantee consistency
  added one TODO in projection
  FiniteStateMachine.quotient() allows on_duplicate_transitions
  New Doctest for failing simplification when duplicate_transition_add_input is used.
  new hook on_duplicate_transition
  ...

Conflicts:
	src/sage/combinat/finite_state_machine.py