new release

I am going to do a new release soon. Here is a list of tasks that I think are worth tackling before the release:

• Move the installation instruction to bob/docs which should fix #246 (closed)
• Update installation instructions to talk about the archive channel
• bob.bio.video!40 (merged)
• bob.db.swan#2 (closed)
• bob.db.siw#1 (closed)
• bob.db.ldhf#2 (closed)
• bob.bio.face_ongoing!5 (merged)
• bob.bio.htface mac builds, see bob.bio.htface@d970f521
• #260 (closed)
• bob.db.swan#3 (closed)