v0.2.3

Enhancements

• Default charset to utf8mb4
• Raise error when server does not support required capabilities
• Implement public key exchange for sha auth methods
• Support older MySQL versions (tested against 5.5 and 5.6)
• Change MyXQL.start_option/0 to use :ssl.tls_client_option/0 type

Bug fixes

• Handle error packet on handshake