3.0.0

• Updated to pronamic/wp-pay-core version 3.0.0.
• Updated to pronamic/wp-money version 2.0.0.
• Switched to pronamic/wp-coding-standards.

2.0.8 🐾

• Added response data to error for unexpected response code.
• Moved next payment delivery date filter from gateway to integration class.
• Throw exception when Mollie response is not what we expect.