Retrotranslator 1.0.6 released

Retrotranslator is a Java bytecode transformer that translates Java classes compiled with JDK 5.0 into classes that can be run on JVM 1.4. Supported features: generics, annotations, reflection on generics and annotations, enums, autoboxing, for-each loop, varargs, static import, concurrency utilities, collections framework enhancements.

Changes in Retrotranslator 1.0.6:
- Emulated generic signatures for the collections framework classes (useful for JAXB).
- Cached data used by the transformer can be garbage collected.