Log Message:
get_iplayer: update to 3.28

Changes in 3.28

     * Web PVR: Fixed wrapping of long lines in programme info page
     * Fixed bug that caused some episodes to be skipped when using
       --pid-recursive with certain CBeebies/CBBC programmes
     * Added support for "cloudfront" CDN. You can now use
       --exclude-supplier="cloudfront" if necessary.
     * The modes and modesizes programme info fields are now shown in an
       abbreviated form. Individual streams are no longer listed, only
       available quality levels.
     * The "vbidi" CDN is now excluded by default. It is inaccessible to
       get_iplayer and generates useless warnings derived from 403 responses
       to requests for HLS master playlists.