Added a keyboard shortcut for the equalizer menu item, added a user
contributed button for an equalizer toolbar button, and replaced the
randomize playlist button with something different from the same user.
I had to redo the randomize button, because template PDFs don't support
white cutout shapes, but instead need to be formatted as hollow spaces
in the paths. Naturally, I couldn't figure out how to do this with
Inkscape the right way, so I rendered the original to a 1024x1024
bitmap, then imported that into a new document and traced it. Meh. I
need a better icon anyway, but this looks okay on the toolbar for now.
Signed-off-by: Christopher Snowhill <kode54@gmail.com>
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