asciidoc-0.1.1: test/regression/entity_needs_semicolon.test

AT&T but AT&amp T keeps its space.
>>>
Document
  { docMeta =
      Meta
        { docTitle = []
        , docTitleAttributes = Nothing
        , docAuthors = []
        , docRevision = Nothing
        , docAttributes = fromList [ ( "sectids" , "" ) ]
        }
  , docBlocks =
      [ Block
          mempty
          Nothing
          (Paragraph
             [ Inline mempty (Str "AT")
             , Inline mempty (Str "&")
             , Inline mempty (Str "T but AT&amp T keeps its space.")
             ])
      ]
  }