v19.2.0: Should cache destination responses (#2552)

What’s Changed

• Should cache destination responses (#2552) @miherlosev
• Fix hammerhead.js throwing Uncaught DOMException: Failed to construct 'Worker' error on recaptcha call (#2566) @Farfurix
• support the target attribute of base tag in multiple-windows mode (#5393 in TestCafe) (#2564) @AlexKamaev
• fix Uncaught TypeError: 'deleteProperty' on proxy: trap returned falsish for property 'token' (close #2504) (#2561) @LavrovArtem
• Refactoring (#2560) @miherlosev
• Fix the Chrome 88 domParser test, remove unnecessary old IE conditions (#2562) @Farfurix
• fix Service Worker overwriting window object causes crash (close #2538) (#2559) @LavrovArtem
• fix openWindow is calling the URL twice in rapid succession when using TestCafe v1.10.1 (close #2544) (#2558) @LavrovArtem
• Fix JavaScript erro occurred in ODOO v13 CRM demo when running with TestCafe (closes #2554) (#2557) @Farfurix
• [docs] Update the contribution guide (#2553) @DIRECTcut
• Node.remove (close #1746) (#2556) @LavrovArtem
• ParentNode.append (close #1745) (#2555) @LavrovArtem