addenda to yesterday's entry

[denise]

1) People who do not have write access to the repo can't change labels or milestones, so ignore all the bits about changing labels and milestones in yesterday's entry. Somebody with commit access will have to add the labels and change the milestones when an issue is submitted and when somebody decides to start working on an issue.

2) We did discover that it's possible to assign issues to people once we add them to a read-only team membership of the repo. I've added people who have open pull requests and assigned the issues they're working on to them.