Use v1.1 of Twitter's API.
This requires us to authenticate for previously public endpoints, which means we now need access keys matching the consumer keys in local.env.
Add dev twitter API tokens; #993
Tweak nomenclature to match Twitter's; #993
Bump version to 8.5.5
Bump version to 8.5.5-dev
Tweak nomenclature in default_*.env too; #993
Add some json endpoints to robots.txt.
(https://botbot.me/freenode/gittip/msg/3514471/)
Merge pull request #994 from buttscicles/robots

Add some json endpoints to robots.txt.
Bump version to 8.5.6
Bump version to 8.5.6-dev
Add Google site verification file; #995
Bump version to 8.5.7
Bump version to 8.5.7-dev
Link to receipt for manual charges

I was asked to manually charge Heroku $5,000.00, to make their
accounting easier than having smaller charges hit every week. They need
the receipt, of course.
Bump version to 8.5.8
Bump version to 8.5.8-dev
Don't line wrap elapsed time, issue #976

The problem that was seen was reporting a user less
than one minute old. In addition to avoiding a line
break, this commit promotes "xx seconds" to be "1 minute".
Merge pull request #1000 from gittip/fix-gh976-2

Don't line wrap elapsed time, issue #976
Bump version to 8.5.9
Bump version to 8.5.9-dev