anchor.diff:  talk to IDE plug-ins, paint pretty printed documents or just return a boolean
   for monitoring purposes.
   
  -[[runner]]
  +[[runner, Automatic Test Discovery]]
   
   Automatic Test Discovery
   ------------------------
  
positive.code: changing is signature to match the macro. If you don't have any setup
  function you need to define an empty 'BeforeEach()'.
  
  * Dito for 'AfterEach()'.
  
  * Remove any 'set_setup()' and 'set_teardown()'
  
  
negative.code: * Change the call to add the tests to 'add_test_with_context()'
  
  Done.
  
  It is good that this is a simple process, because you can change over
  from TDD style to BDD style in small steps. You can convert one source
  file at a time, by just following the recipe above. Everything will
  still work as before but your tests and code will likely improve.
  
  And once you have changed style you can fully benefit from the
  automatic discovery of tests as described in <<runner, Automatic Test
  Discovery>>.
  
  
  Changing Cgreen Reporting
  