Let -preCIxxxx get ahead of -pre1b in the queue

I think it will work with the following scheme:

* Official releases have no `-pre`
* Prereleases get `-pre{number}
* CI aka nightly builds get `-pre{number}CI{nnn}` where {number} is the previous pre number

Let's try it and see if I guessed right with NuGets "which is the newest" algorithm