Slate does not allow inline nodes like links and
images to have marks (like strong, emphasis). This
commit changes the parsers to process these nodes
as if they were text nodes so that marks are
handled.
Because we convert markdown to an AST, the literal input
cannot be reconstructed, so we have to default to improving
received markdown rather than degrading it. This fix
implements smart MDAST parsing to ensure that adjacent
nodes with the same styling (strong, emphasis, etc) are
grouped together rather than separated (which results in
verbose output).
