New developer for ATerm library

Erik Scheffers from TU/e is welcomed as a new member of the development team. His first goals are code tuning the ATerm library for portability, incompatibility issues with the newest GCC versions, and some minor efficiency issues.

Meta-Environment 2.0, Release Candidate 1

We have put a release candidate online for beta testing version 2.0. See ReleaseNotes for important information.