The level editor is a confirmed upcoming feature to the game allowing users to make and upload levels for others to play
On January 17th 2020 julien the game's lead developer released a very early version of the game's upcoming editor. using the way back machine we can see what it looked like.
Over the course of the next few weeks the level editor has matured into being much more competent at making levels. Https://bombhopperio.gitlab.io