v2.0.0 - adds compatibility for Gradle 6.4 but breaks backwards compatibility

See #4 and the updates in the readme.

Use this release of the Groovy wrapper for the Gradle wrapper for 6.4 onward. And the prior release for older Gradles, if needed.

Binaries embedded in the repo have been updated accordingly and it should be possibly to drop them right in (the entire gradle/wrapper directory if you're OK using Gradle 6.4!)

Many thanks to @keturn !