New Features

• Add Array and String parsing to the Mysql2::Client.new(:flags => ...) parameter to make it easier to pass flags from database.yml by name rather than magic numbers.
• Add compile-time configure flag --with-sanitize[=address,cfi,integer,memory,thread,undefined] to enable Clang / GCC sanitizers.

Bug Fixes

• Fix memory leak in Mysql2::Client#close
• Don't enable Clang sanitizers on end-user CI systems where the mysql2 gem is not the thing under test.

Changes

• Update Travis tests for MariaDB 5.5, 10.0, 10.1, and MySQL 5.7 GA.