remove setup_requires from testing extras
allways use pinned version if avalible
fix link overrides caching
detect and resolve circular dependencies
fix version and depenency overrides, add support for removing dependencies
add support for development revisions in versions
remove setup_requires from test_extra defaults
install packages with circular dependencies with --no-deps
remove setup_requires from buildInputs (it's already in propagted build inputs
update examples, add plone