Best way to handle -latest sufix

[idgserpro]

• Plone CLI version: 1.1
• Python version: 2.7.16
• Operating System: Ubuntu 18.04

Description

I'm having dependency hell when trying to use version 4.3 in plonecli. After trial and error, I've seen that, when prompted to add a version, 4.3-latest is functional. Doing this I've received only a six dependency problem, which I hope will be adressed in plone/Products.CMFPlone#2867.

I was expecting that, setting 4.3 with no patch (MAJOR.MINOR.PATCH) specification, it would get the last stable version in 4.3.x, but it's not the case.

The discussion here is: brainstorm if adding the -latest sufix is a correct assumption and implement it, or add somehow this in the documentation.