v0.4.1

• Code: Update mocha to 8.0.1
• Code: Replace path with upath for windows compatibility (#83)
• Code: Use DOCGEN environment variable instead of --doc flag
• Code: Add an editorconfig to make the tabs a reasonable width on GitHub (Jed Fox)
• Code: Allow package.main to be empty
• Code: Support scoped plugin names
• Docs: Add more method documentation
• Docs: Fix external links to examples
• Docs: Add Migration section to README and move some pieces around