Hexagonal sticker design using the logo with add-on tiles to expand the annex.
This complies with https://github.com/terinjokes/StickerConstructorSpec/ and so is intended to combine with other hexagonal stickers.
Some of the add-on tiles contain enough white-space to add other art work as desired.
It includes some smaller tiles that can bridge between hexagonal and square/regtangular stickers, as illustrated in https://github.com/terinjokes/StickerConstructorSpec/issues/13.
License: Same as git-annex logo; Joey would appreciate spare git-annex stickers mailed his way, but does not require it.