Rename complete => completed to match the README
Add some very basic error checking so the user doesn't get a stack trace in the face
Properly load "now playing" games from backloggery

"Now playing" games have CSS class "gamebox nowplaying" rather than just
"gamebox".
Pull out common code for backloggery main list and wishlist

This is groundwork for compilation support
Add support for compilations.
Add --filter-from and --filter-input options to filter from other sources than BL
Write terminating newline in text format
Use pprint for edn output
Add experimental filter-cache to s2b.sh, update version number