utils: fix super implementation to allow for overridden method chaining
core: fix media control blinking issue on chrome due to excessive mouse move events
playback handler: fix super method call
media control: fix css for current position when the scrubber is positioned around 0.5% of the bar total width
chromecast: forced plugin initialisation due to api available event issues
pip: add addMaster() capability (refs #7)
pip: add test for discardPip() (refs #7)
hls plugin: make it(barely) work on firefox

Conflicts:
	src/plugins/hls_playback/hls_playback.js
pip: add discardMaster() function (refs #7)
pip: add masterToPip() (refs #7)
pip: add pipToMaster() function (refs #7)
pip: improve addMaster() behavior (refs #7)
global plugin handler: store plugin instances and add PiP by default

Conflicts:
	src/components/loader/loader.js
pip: disable watermark plugin (closes #47)
testling: update package.json
testling: update README
testling: update package.json
testling: update README
testling: update README
testling: remove it from README