0.3.1

What's Changed

• Added renesas_portenta to supported architectures to avoid warnings in #31
• Made begin() idempotent to avoid side effects in TwoWire in #31
• Fixed warnings from missing return statements in derived_begin() in #31
• Added check to ensure proper register values in derived_begin() for Portenta C33 in #31

Full Changelog: 0.3.0...0.3.1