0.3_prerelease (EDIT: Do not download! See description)

Pre-release 0.3 supports adding custom "engine" types, and creating full .physics tags from JMS files. Currently missing feature of creating custom global properties "presets" (planned to be added on the next pre-release).

EDIT: Do not download! This pre-release is broken, the main code has been refactored and a new release is on the way.