BETSE 0.5.1 (Happier Hodgkin) released. This interim point release is both a 0.6.0 release candidate and the oldest version for which backward compatibility is intended to be preserved. Since this point release is principally required to validate backward compatibility by functional tests locally referencing the corresponding Git tag (i.e., "v0.5.1"), no release notes are provided. See the following 0.6.0 release for proper release notes. For similar reasons, no PyPI tarball or third-party packages are intended to be produced for this (possibly unstable) point release.