This release contains all of the same code and therefore release notes as 0.3.12.

The following changes are specific to 0.2.19:

Changes

• The EventMachine ActiveRecord adapter and EM Fiber driver have been removed. You should use https://github.com/igrigorik/em-synchrony instead as it's being maintained there.

Bug fixes

• The ActiveRecord adapter now symbolizes the keys from the connection options hash as early as possible to ensure hash lookups on that hash will work before the Mysql2::Client object is created.
• Make sure a default LIMIT is set when an OFFSET is set.
• A couple of small fixes related to newer ActiveRecord versions since the last mysql2 release

View the diff here