2.0.4

• fix: missing flattr attribute for contributors
• fix: subscribe button description is properly wrapped in p-tags
• fix: faulty valid file if check returns "unreachable" but includes a Content-Length header
• fix: more thoughtful handling of ETags when validating files prevents failing updates
• fix: "NaN" analytics should display properly now
• fix: off-by-one display in analytics
• fix: don't HTML-encode quotes in episode title/subtitle/summary since it leads to invalid feeds
• add trakt.tv to the services list
• add support for RSS channel image tag