[SpartanJ]

That depends on what you want to extend. You can expand the capabilities of the LSP, linter, and formatter by adding new configurations. You can also create new color themes for the editor and the terminal. You can also customize the UI (it won't be that easy, but you can). But, if you want to create a new plugin... since it's native code you'll need to at least fork the repository and create the plugin on your own repository. I don't plan to be a dictator, just a supervisor. And of course, I'm more than open to getting new collaborators (this is the main reason I'm publishing it), that would be great. I just want to ensure that my application branch is "safe" (no malicious code, no horrendous implementations, etc).