Envisage 7.0.2

This is a bugfix release that fixes some test interaction issues and
automates the documentation build.

Fixes

• Fix test-ordering issues with egg-based tests that modify pkg_resources
  global state. (#564)

Documentation

• Reorganise the gh-pages documentation. The main gh-pages page
  (https://docs.enthought.com/envisage) now matches the contents of the GitHub
  main branch, while subdirectories (e.g.,
  https://docs.enthought.com/envisage/7.0) provide documentation for released
  versions. A 'latest' symlink is in place, so
  https://docs.enthought.com/envisage/latest will bring up the documentation
  for the latest release. (#565)

Build

• Add GitHub Actions workflows to automate documentation updates. The main
  documentation is updated on every push to main, while the release
  documentation is updated on each GitHub release creation. (#565)