v1.9.0

• [New] add enumerable properties to Function inspect result, per node’s assert
• [New] add enumerable own Symbols to plain object output
• [Fix] hex characters in strings should be uppercased, to match node assert
• [Robustness] cache Symbol.prototype.toString
• [Dev Deps] update eslint, @ljharb/eslint-config, aud, core-js
• [meta] require-allow-edits no longer requires an explicit github token
• [actions] update rebase checkout action to v2
• [actions] add "Require Allow Edits" action
• [actions] switch Automatic Rebase workflow to pull_request_target event
• [Tests] migrate tests to Github Actions
• [Tests] run nyc on all tests
• [Tests] node 0.8 has an unpredictable property order; fix groups test by removing property
• [Tests] fix tests for node < 10, due to regex match groups
• [Tests] add passing tests