Created by Cuchaz. This repository is being maintained by Caellian.
Download the M3L installer.
You can use the python build script and gradle. Grade is prefered as it's easier to maintain than python one and is also easier to use "out of the box".
If you're unfamiliar with gradle, you can check out it's free and turough online documentation. Python script uses SSJB by Cuchaz and it's tasks functionality to interact with command prompt/terminal. You can get a list of tasks by just running the program and you use tasks by adding them as arguments.
Ask them in the forums.
The development of M3L was supported financially by players. If you'd like to donate to Cuchaz, you can go to either his Patreon or his official website.
Current maintainer (Caellian) doesn't accept donations.
M3L is available under the Lesser GNU Public License v3, the full text of which is provided in LICENSE.