My version numbering scheme is a bit complicated isn't it? XD Well, here I'll tell you, just for infos, the only important number for you probably is the "build number". By "building" here means "the amount of file/work savings I've done" (and so, different file backup), eg. "build 150" means that I have 149 backups + 1 current .blend files.
As for the version number, the format is: (status #).(major #).(minor #).(step #)_(substep #)
In layman's terms, status # should be 0 for WIP and 1 for major stable releases, major # should be changed when I did a complete rework(s), minor # means minor modifications to the whole branches (sometimes not