Changes in manakai 0.4

Changes from manakai 0.3.2 to 0.4.0

DOM Implementation is rewritten. A DOM implementation can now be instantiated without meaningless DOMImplementationRegistry object! For more information, see the documentation for the Message::DOM::DOMImplementation module.
Selectors API has been implemented, with support for universal and type selectors (including namespace support). Note that this feature relies on Selectors implementation contained in the Whatpm package.
dis Code Generator is No Longer Used. DTD module generation is dropped as well.
Limited Support for DOM5 HTML, including compat_mode, manakai_compat_mode, and part of inner_html attributes. Note that the inner_html attribute relies on the HTML5 parser and serializer that are part of the Whatpm package.
DOM Internet Media Type Module Support.
Japanese character encoding modules are no longer part of the manakai-core package, for some reason. Sorry for inconvinience.
TreeStore, XDP, and SuikaWiki modules are dropped. They might be eventually reimplemented if necessary.
Support for Atom Threading Extension is dropped. It is expected to be reimplemented in a future revision of manakai.