md_lib.ml: +Quote
md_backend.ml: +Quote
md_backend.ml: renaming Quote into Blockquote (because the former was already taken)
md_lib.ml: renaming Quote into Blockquote (because the former was already taken)
md_backend.ml: newline fix
md_parser.ml: implementation of email-style blockquoting
md_parser.ml: tiny fix in email style blockquoting
md_backend.ml: fix: <quote> changed to <blockquote>
md_parser.ml: blockquotes and code inside lists
md_parser.ml: fix: blockquote in a list item
implementation_notes.md: check list update