Class, Method and Lambda (was block) are expressions. Just making things clearer, especially for the blocks (ahem, lambdas) is matters. wip
Making the distinction clearer Some fixing of previous (wip)
The parser presents the whole call that defines the block as a block. And so does the Ruby layer, as we don't want to do processing in ast. Just making it clearer, also Vool:: block will have to be renamed
