• #474: Fixed PropertyStorage pathFilter().
• #476: CSP policy incorrect, causing stylesheets to not load in the browser
  plugin.
• #475: Href properties in the browser plugin sometimes included a backslash.
• #478: TooMuchMatches exception never worked. This was fixed, and we also
  took this opportunity to rename it to TooManyMatches.
• The zip release ships with sabre/vobject 3.2.4,
  sabre/http 2.0.4, and sabre/event 1.0.1.