v0.7.0

New keywords:

• New Browser, New Context and New Page to create playwright objects representing multiple browser instances, browser profiles (contexts) or tabs (pages)
• Switch Context and Switch Page to switch between open pages
  • Switch Browser has been added but is unreliable and not recommended for use yet
• Get Element Count- gets amount of elements matching selector and supports assertion syntax

Other features:

• >>> selector syntax for piercing frames
• Better error messages