Consider Creative Commons license for educational content

[ecomodeller]

Problem

This repository uses a GPL-3.0 license, but GPL is designed for software, not educational content like courses.

Recommendation

Consider switching to a Creative Commons license, such as:

CC BY 4.0 (Attribution) - Recommended

• Others can share and adapt the content
• Must give appropriate credit
• Most permissive CC license

Replace LICENSE file with:

This work is licensed under the Creative Commons Attribution 4.0 International License.
To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/