v0.4.2

What's Changed

• Some cleanups by @jbisits in #54
• More flexibility in setting background fields by @jbisits in #57
• Add anomaly saving by @jbisits in #59
• Save background state to output by @jbisits in #61
• Functions to animate anomaly by @jbisits in #63

Full Changelog: v0.4.1...v0.4.2