Upgrade vendor'd six to latest release
|Reported by:||Alex Gaynor||Owned by:||nobody|
|Has patch:||no||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
We currently have 1.4.1 vendored, 1.5.2 is out, it's good to keep up to date, if for no other reason than it means less work down the road if we ever need a new feature from it.