2.3.0

• Upgrade zapcore dependency.
• Optimize some tests.
• Improve docs.

2.2.0

• Upgrade zapcore dependency.
• Strict type checking.
• Isolate Redis API calls to separate class.
• SQLConn::get_connection_params always returns array, empty on
  non-opened connection.
• Fix code sample on disabling autocommit.
• More samples.
• Fix composer.json to properly comply with PSR-4.

2.1.0

• Upgrade zapcore dependency.
• Reorganize tests.

2.0.0

• Update zapcore dependency.
• Drop support for PHP 5. Support PHP <= 7.3.
• Rename SQLUtils to SQLConn. This class manages and only manages
  connection. Isolate it in separate file.
• Isolate SQLError and RedisError in separate file.
• Remove private connection-related properties such as SQL->dbtype or
  RedisConn->redistype. Use array properties SQL->verified_params or
  RedisConn->verified_params instead.
• Remove many setters such as SQL->set_connection() that is potentially
  detrimental to expected behavior. Use SQL or RedisConn constructor
  for total encapsulation of connection management.
• Remove type parameter from SQL->stmt_fragment_datetime().

1.3.5

Tag 1.3.5.

1.3.4

• Remove deprecated methods: SQL::open, SQL::unix_epoch.
• Add new method SQL::table_exists.
• Optimize connection managers.
• Isolate generated test data in separate directory.

1.3.3

• Make sub-packages true metapackages.

1.3.2

• Add Redis support.

1.3.1

• Refactoring.

1.3.0

• Fix datetime fragment bugs.
• Codecov integration.