jnunemaker/mongomapper — pull request #340 by brianhempel (2011-11-03 20:45:18+00:00)
Title: Use plucky 0.4.x, which supports $and queries. [Fixes #339]

Use plucky 0.4.x, which supports $and queries. No longer compatible with < 0.4, plucky changed Query#update to Query#amend.

Also, you may have to do some project Gemfile fighting to get mongo, bson, and bson_ext to line up (not helped by the recent yanking of bson 1.4.0 and 1.4.1).