Not bad but need some improvements.
1 - Try to put in some un-install support, at the moment you can only remove it by force.
2 - Clean up your code a little and get rid of repeating scripts, put them in a function and put that in your helper class and call them as objects.
3 - Take in mind its extremely difficult to download your extensions if people don't understand your website language, don't forget the site were you promoting them on is English.
Good luck!
Owner's reply:
Thank You for that useful review. I will try to improve all that points in next releases.
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