Parrot 2.5.0 is out now.

Parrot is a virtual machine for compiling and executing bytecode for dynamic languages. It currently hosts a variety of language implementations, including Javascript, Ruby, Lua, Scheme and PHP.

This release adds ByteBuffer PMC for direct byte manipulation, and increases the test coverage of core PMCs. It also features general STRING API cleanups and the ability to use inversion lists for charclass lists in regexes.