1.16 and 1.17 Come with a lot of New feature (Invisible item frame and glowing ones)

Done in #219 added a permission, default behaviour is set to make maps invisible

Added in 4.2.0, see https://github.com/zDevelopers/ImageOnMap/releases/tag/v4.2.1

By default maps have to be invisible, /tomap [resize] -v -i
option -v makes them visible and -i makes them indestructible. Adding a permission to make indestructible or invisible map will be needed