2.1.0.rc0

This release candidate has the following bug fixes and features added since the beta version of 2.1.0:

• RUBY-961 Remove server whose 'me' field does not match connect address
• Documentation fixes (@dblock)
• RUBY-964 Support String collection name as map reduce :out option
• RUBY-965 Add #exists? to User:View
• ServerSelector refactor
• RUBY-883 Refactor Operations
• RUBY-986 Try to connect to different protocol families (@agis-)
• RUBY-983 Close socket leaked from initializing resolver
• RUBY-984 Ensure OperationFailures are raised when doing bulk writes
• Command Monitoring spec tests
• RUBY-990 Allow assignment of logger per client
• RUBY-951 Confirm that driver complies with Connection String spec
• RUBY-991 Allow a configurable protocol query log string limit
• RUBY-839 Evaluate 2.0 driver performance with 1.x performance
• RUBY-981 Unix domain socket support (@agis-)
• RUBY-995 Move parallel_scan method to Collection
• Bulk write API refactor
• RUBY-996 Add rubinius to travis
• Fix max/min as query options
• RUBY-999 Use constant-time hash comparison
• Don't memoize logger in Loggable (@JoNyman)
• RUBY-769 Comply with GridFS spec
• RUBY-911 / RUBY-963 Add #with method on Collection taking new :read or :write option
• RUBY-1006 Don't white-list query modifiers