Start writing some real code
Add some JSON support code; we also need --greader-items
Load expected encoded feed URLs from greader-items/
Check request, response in pairs
Decode JSON as well; but we'll have to scrap all of this because we need to validate at 12MB/s+, and neither cpython or pypy come anywhere near this speed.  Also, pypy doesn't seem to have json or simplejson speedups.
Add shell-pipe based implementation
Try dummy pure-Python implementation; this is taking over 1m43s; abort
Revert "Try dummy pure-Python implementation; this is taking over 1m43s; abort"

This reverts commit f94065a60908c9d102d51225ba873be45d571759.
Start work on new and ugly checker