Version numbers

[vpratfr]

It would be great to get support for version numbers too. For example if I release an update to a plugin which is not compatible with a child plugin, that one should be deactivated.

I still could not find a proper way to do that on my own freemium plugin suite, I currently have a solution that works only one way (child compatible with parent version X at least). However, the other way is very important too (child compatible up to parent version Y at most)