michaelg/dev: links for tw2-excanvas

root/pypi tw2.excanvas-2.0.2.tar.gz
root/pypi tw2.excanvas-2.0.1.tar.gz
root/pypi tw2.excanvas-2.0.0.tar.gz
root/pypi tw2.excanvas-2.0a1.tar.gz
root/pypi tw2.excanvas-2.0a0.tar.gz