Major release

This release fixes support for WebdriverIO V6 where it could not read property 'cjson:metadata' of undefined , see #23

I've tagged this release as major because the logger went from V5 to V6, I don't think it will be breaking but I want to be sure

Contains:

• chore: explicitly mention V6 8802b14
• Merge pull request #31 from wswebcreation/v6 e4b9220
• Merge branch 'master' into v6 f7bf490
• chore: explicitly mention V5 and V6 f5d9a0b
• chore: explicitly mention V5 1db0f95
• feat: upgrade to V6 fd89231

v1.3.0...v2.0.0