added support for phishtracks.com
added support for musicchoice.com
updated readme for new sites
validate target element before firing event
added console.log to help debug missing elements
bump manifest version
converted to leverage chrome.commands for key binding
convert majority of sites to command api
refactor vkontakte to use shared.js
refactor yandex to use shared.js
add remaining Media Keys
remove key listener as no longer needed
background.js must be persistent in order to maintain list of active tabs
updated docs to remove info for building key listener
updated docs
refreshing a tab caused it to be added to activeTabs multiple times
merge upstream
merge upstream changes
removing icons
default keys to global (required for media keys to respond)