[Azoth SS] nullptr checks.
[Monocle] TextDocumentAdapter::SetRenderHint().
[Monocle FXB] Properly handle emailless authors.
[Monocle FXB] Respect old block format in paragraph handler.
[Monocle FXB] Added HandleChildren() utility method.
[Monocle FXB] HandleMangleBlockFormat().
[Monocle FXB] Moved preamble handling to descr handler.
[Monocle FXB] Missing fwd decl.
[Monocle FXB] Handle annotations.