Changes in libsoup from 2.99.9 to 3.0.0: * Remove unused dependency on libxml [Patrick Griffis] * Use G_DECLARE_FINAL_TYPE when applicable and bump GLib dependency to 2.69.1 [Patrick Griffis] * Add PyGObject overrides for SoupMessageHeaders to behave like a dict [Patrick Griffis] * Fix soup_message_add_status_code_handler() in Vala [Rico Tzschichholz] * Ensure that all header values are valid UTF-8, other encodings are not supported [Patrick Griffis] * Support Content-Disposition headers missing a disposition-type [Patrick Griffis]