- start DashPlaylistLoader in HAVE_NOTHING state
- enter HAVE_METADATA in media() method
- set media automatically only for child playlist loader as masterPlaylistLoader is set from masterPlaylistController

update tests with desired behavior

ensure loadedmetadata is triggered after loadedplaylist

remove unnecessary media playlist selection for master loader

…urns and once when the initial media is selected

- delay triggering selectedinitialmedia event until the active audio playlist loader is finished setting media

- ensure that HLS playlists without alternate audio are not affected

- don't autoselect media for the masterPlaylistLoader as that is done by MasterPlaylistController
- ensure updateMaster returns null if there are no changes in the playlist

- trigger loadedmetadata as part of haveMetadata
- add some comments to explain why we trigger certain events and set media at points

- moving haveMetadata to a class-level method, more comments.

- remove setTimeouts as they were not performing a necessary function. XHR requests can return in any amount of time and HLS PlaylistLoader handles any requests within a callback, or returns if a request need not be made. DASH should do the same

- cleanup the minimumUpdatePeriod setup

- remove unnecessary clock.ticks from tests

… playlist

…and media

- fix up a comment
- add idea for media groups refactor

…mention hasPendingRequest for fallback media selection

- correcting merge mistake
- moving check for sidx to correct place

- have parseMasterXml use previously downloaded sidxes when refreshing media

- haveMaster
- parseMasterXml
- handleSidxResponse_
- requestSidx_

- add unit tests for setupChildLoader, hasPendingRequest
- add functional test to check if requests are made for sidx boxes

…error case

…responseType was set to arraybuffer