v3.0.2

A sprinkle of bug fixes... The legacy value migrator was running whenever a Meganav data type was saved, and breaking some of the existing property values (#63) 😳 – this is now fixed.

The awesome community found that some actions led to exceptions (#61) or console errors (#55). H5YR to @mattwootton for fixing an issue with minifying CSS in the backoffice (#57) too!