remove warning
FragmentLoader.as: decouple _loadfirst/_loadnext by passing args
Level.as : introduce getFragmentBeforePosition()/remove getSeqNumBeforePosition()
suppress one call in FragmentLoader
ChromelessPlayer.as: add default play() position : set it to -1
FragmentLoader.as : decouple furthermore loadfirst/loadnext by moving some logic up in _checkLoading()
FragmentLoader.as: get rid of one more variable
FragmentLoader.as: get rid of _seqnum
fix video freeze issue with FP 15 / Chrome
dont push several times AVCC tags.
related to https://github.com/mangui/flashls/issues/66
parse NAL unit slice type to determine if a Video Frame is a keyframe or not
don't push several times identical AVCC tags
related to https://github.com/mangui/flashls/issues/66
avoid useless Date() object creation
add logs about video decoding status
related to https://github.com/mangui/flashls/issues/66
add logs about video decoding status

related to #66
reindent + optimize location of NALU tag type check
parse SPS NAL unit to retrieve video width and height
related to https://github.com/mangui/flashls/issues/59
fix coercion exception
report Fragment width/height in HLSPlayMetrics.as
related to https://github.com/mangui/flashls/issues/59
fix HLSEvent.FRAGMENT_PLAYING not triggered for first fragment after seek
ChromelessPlayer.as : report whole loadmetrics/playmetrics event to JS
frag width/height : reduce log verbosity
related to https://github.com/mangui/flashls/issues/59
fix page title