Suggestion: User script
First, thank you for this extension.
For an easier installation on everyone's computer I suggest you export a user script version. We do this at work with extensions like tampermonkey and custom scripts. The deployment is greatly simplified, and updates are straightforward (just update the file)
For a user script to work it shoud meet the following conditions:
- be a public file
- be a single javascript file
- the file name must end with .user.js
I'll be glad to help if needed.