napari Plugin Engine v2 (npe2)

npe2 (napari plugin engine v2) is the modern, robust plugin system for napari. It facilitates explicit plugin discovery and contribution management through manifest files and package entry points, aiming for better isolation, explicit dependency management, and improved testability compared to its predecessor. The current version is 0.8.2, and it follows the napari release cycle, with frequent updates during active development phases.