v.6 breaking changes

[j0tunn]

• [ ] Rename events:
  • START_BROWSER -> SESSION_START
  • STOP_BROWSER -> SESSION_END Those events actually indicate when browser session starts and ends. There are lots of sessions during run
• [ ] rootUrl –> baseUrl
• [ ] ignoreElements method: ignore all matched elements by default without any helpers — https://github.com/gemini-testing/gemini/pull/692
• [ ] run tests with command gemini instead of gemini test by default.
• [ ] drop [email protected]

[Dmitriy-kiselyov]

• [ ] Get rid of deprecated skip and browsers API methods – here and here. Also remove any reference from documentation.