MongoDB Ruby Driver v1.6.3

• Performance measurements and enhancements (especially for C-extensions)
• Bug fixes for checking strings with non UTF-8 forced or implied encodings
• Added refresh support for multiple threaded instances of ReplSetConnection
• Added ability to handle IRB::Abort Exception (ctrl-c) cleanly
• Added support for large dates on 32-bit platforms (Ruby 1.9+)
• Added #to_ary method for BSON::ObjectId (Farrel Lifson)
• Added support for ENV['MONGODB_URI'](Seamus Abshere)
• Various gridio bug fixes (John Bintz)
• Various logging support improvements
• Various documentation improvements (tutorials, sorting, links)