Gradle plugin for creating fat/uber JARs with support for package relocation.

 Shadow is an extension of the Gradle Jar task that optimizes FatJar/UberJar
 creation by using JarInputStream and JarOutputStream to copy file contents.
 This avoids the unnecessary I/O overhead of expanding jar files to
 disk before recombining them. Shadow provides the similar filtering,
 relocation, and transformation capabilities as the Maven Shade plugin.
 The gradle-shadow-plugin makes it possible to integrate JFlex into the Gradle
 - build system.