These very excellent photographs have been hand picked and usually fall under
the cc-by-* licenses - or similar, as mentioned:

coastalclouds.jpg   - Nicolas Raymond   CC-BY-2.0       - https://flic.kr/p/dbvGNY  (Unmodified)
calmsea.jpg         - CEBImagery        CC-BY-NC-2.0    - https://flic.kr/p/nvKUq1  (Resized, probably going to reverse this)
sunsetdark.jpg      - RAVEfinity        CC-BY-SA-2.0    - https://flic.kr/p/jyi4Zh  (Unmodified)

A big thanks to those photographers - spend them a beer or give them a nice
comment if you like these backgrounds.

