Test of syntax highlight

Test of the syntaxhighlighter:

    # generic sequence trait
    trait seq<T>
        def empty : boolean
        def head : T
        def tail : seq<T>
        def to_string => '[' ++ join(self, ', ') ++ ']'
        def concat (other:seq<T>)
            => other.empty ? self : shift(other, reverse)
        def reverse => shift([], self)