• Download Maven from a Heroku-hosted mirror of Maven Central. (#317)
• Download Maven Wrapper distributions from a Heroku-hosted mirror of Maven Central for apps using Apache Maven Wrapper 3.2.0 or later with a distributionUrl on Maven Central. (#317)
• Warn when the Maven Wrapper is older than 3.2.0. (#317)
• Resolve Maven Central artifacts from the Google Maven Central mirror to avoid Maven Central rate limiting. Set MAVEN_CENTRAL_MIRROR to false to opt out. (#321)