Currently there are two release branches of anduril, they are 1.0 and 1.2. 1.0 at time of writing has been unmaintained and unimproved for over a year, and the 1.2 branch is nearing a release. Typically, I roll several builds in a single release to address individual bugfixes, and after an abritrary number of changes I will move a release from, say, 1.2b4 to 1.2b5. Large version number changes typically indicate large code overhauls. The code in 1.2 is significantly different from that in 1.0.