• various fixes for em_mysql2 and fiber usage
• use our own Mysql2IndexDefinition class for better compatibility across ActiveRecord versions
• ensure the query is a string earlier in the Mysql2::Client#query codepath for 1.9
• only set binary ruby encoding on fields that have a binary flag and encoding set
• a few various optimizations
• add support for :read_timeout to be set on a connection
• Fix to install with MariDB on Windows
• add fibered em connection without activerecord
• fix some 1.9.3 compilation warnings
• add LD_RUN_PATH when using hard coded mysql paths - this should help users with MySQL installed in non-standard locations
• for windows support, duplicate the socket from libmysql and create a temporary CRT fd
• fix for handling years before 1970 on Windows
• fixes to the Fiber adapter
• set wait_timeout maximum on Windows to 2147483
• update supported range for Time objects
• upon being required, make sure the libmysql we're using is the one we were built against
• add Mysql2::Client#thread_id
• add Mysql2::Client#ping
• switch connection check in AR adapter to use Mysql2::Client#ping for efficiency
• prefer linking against thread-safe version of libmysqlclient
• define RSTRING_NOT_MODIFIED for an awesome rbx speed boost
• expose Mysql2::Client#encoding in 1.9, make sure we set the error message and sqlstate encodings accordingly
• do not segfault when raising for invalid charset (found in 1.9.3dev)