Issue #2570985 by ifrik, chipway, lomasr, jhodgdon, shimpy, govind.maloo, vacho, Balu Ertl, Manjit.Singh, alexpott, Bojhan, volkswagenchick, mradcliffe, xjm, tkoleary, yoroy, no_angel, dawehner, webchick, Sam152, RuslanP, Gábor Hojtsy, wengerk, wla_g: Update the module descriptions on the Extend page

Issue #3072702 by alexpott, Wim Leers, mikelutz, xjm, catch, Berdir, tedbow, webchick, shaal, Mixologic, heddn: Core extensions should not need to specify the new core_version_requirement in *.info.yml files so that 9.0.x can be installed

Issue #2429617 by Wim Leers, Fabianx, Berdir, yched, dawehner, effulgentsia, catch, borisson_, jhodgdon, martin107, torgosPizza: Make D8 2x as fast: Dynamic Page Cache: context-dependent page caching (for *all* users!)

Issue #2473729 by FMB, darol100, ifrik, ivarlaks, jhodgdon: Review the hook_help for Internal page cache module

Issue #2368987 by Wim Leers, Berdir, Schnitzel, epari.siva, bircher, vijaycs85, likin: Move internal page caching to a module to avoid relying on config get on runtime