Replace the deprecated `or` operator by `||`.
Substitute illegal XML characters on output by U+FFFD.
Pkgifiy.
Use ocamldoc's linking functionality instead of direct anchors.
Tweak README.
Remove .typerex file.
Untabify and reindent.
Deprecate the IO of document sequences.
Deprecate the functorial interface.
Preparing for release.
Fix markdown in CHANGES.md