6.0.5

Patches

• Updates engines: 49a109a
• Removes audit from test: cbb195f
• Removes coveralls: 574db3a
• Removes travis: d55a913
• Updates wcag-pdf to 5.0.5: 81b0f0d
• Adds gha for test on push and PR: c5b20a1
• Adds schema: 30d7a58