Release v1.1.1

[erikeah]

Hi, and first of all, I would like to congratulate you, and thank you, for this great piece of software!

In other hand I would like to ask you to considerate release a minor version based on current master branch.

But why?

Well, I'm packaging ctpv and I'm using v1.1, however chafa is apparently been skipped because convert is not been found. You fixed this on 4c14f6d. That's the main reason.

Also considerate this release to satisfy statements presents on README.md

Previewing each file type requires specific programs installed on a system. If a program is not found on the system, ctpv will try to use another one. Only one program is required for each file type. ...