jnunemaker/mongomapper — pull request #486 by cheald (2012-12-28 01:41:12+00:00)
Title: Mongo 1.8 support

Rewrote MM to include the new MongoClient/ReplicaSetClient code, and upgraded the write concern code accordingly. Included transparent porting code for the old `:safe` options to use the new `w` options.

Tests pass on my end, been running it in production for ~2 weeks with no ill effects.