The raw, inofficial list of TODOs:

* Implement '@SuppressWarnings'; supersede JANINO's old '-warn:...' feature
* Implement non-SOURCE annotations
* Implement annotation declarations
* Implement ENUMs
* Implement type arguments ('List<String> l;')
* Implement type parameters ('class MyClass<T extends InputStream> { ... }')
* Enhanced FOR loop

Recently implemented:
* ASSERT (simplified, ASSERTions are ALWAYS enabled, as if '-ea' were set)