Long, detailed review of Manjaro 21.2 Qonos Plasma edition, tested in a triple-boot Windows and Linux setup on a laptop with AMD Ryzen processor, Vega graphics and NVMe storage, covering live session, installation and post-install usage, including look and feel, theming and customization, HD display scaling, package management and updates, applications, performance, responsiveness, resource usage, battery usage, stability, consistency, tiny niggles, and more