Summary
- putty-tools: update to 0.75 (commit: 4237861) (details)
- nose: update to 1.3.7 and add python-3.7, 3.9 versions (commit: 8f87158) (details)
- squeak: move VectorEnginePlugin for Cuis into separate package (commit: 1bf1545) (details)
- six: update to 1.16.0 (commit: e72e061) (details)