Hello, i currently run version 2.03 and i see it has been a ton of updates the past few days. 

Which update should i start with? Will i break anything if i update directly to the latest? 

Version 3.x.x is a full rewrite, and requires a configuration and datafile wipe. If you're happy with existing plugin functionality in v2.x.x, stick with it. Later this week (hopefully) I'll have a release which will convert data and config from v2 to v3. If redoing your stacks isn't a big deal, create a backup of your data and config file and update to todays release. But all stack sizes do have to be reset, unless you wait for the converter.

Okay thanks for an honest advice. 
It took "forever" to edit the current datafile, so i think i will stick with it for a few more days, until i got more time on hand to edit it again.
I feel like i should upgrade it soon anyway, with a converter or not - so i just need to do it when i got some ekstra time then.

Thanks for your explaination