[yt-dev] New push access

[Matthew Turk]

Hi all,

This morning, Nathan pointed out that we haven't updated the
membership of the "yt-dev" team on BitBucket recently.  Adding people
to this team gives them the ability to hit the merge button on pull
requests (and create repos as yt_analysis), and since they've both
been incredibly enthusiastic and energetic contributors, I think it's
long overdue!

 * Hilary Egan
 * Mike Zingale

Welcome aboard, and sorry it didn't happen sooner!

-Matt