Update version - composer

See well. Before the slim documentation had instructions on how to install with the composer and without the composer. A few years ago when hearing about the composer tried experience. I could not install.
When it was launched version 3 of slim, I saw that it was mandatory to use the composer. I tried reinstalling the composer and make it work. I could not install.
So I was upset that I could not use the latest version of slim.

You see, I have no options. Or use the composer or I get an old version.
Do you really think I’ll waste my time packing code of others?

If I have to do this, I make my own framework.