modified header tab icons and default cover art icon
added new header tab icons (active state)
more updated header and player icons
added new volume icon for the player
further icon updates
more icon changes
Changed license from .md to .txt

For formatting purposes.
Merge pull request #328 from benhc123/patch-2

Changed license from .md to .txt
more updates
Merge pull request #331 from marcelinkaaa/fw6-icon-update

Fw6 icon update
changelog update