Hello, Forgive me if this is a frequently asked question, I've searched the web and can't find an answer. What is the history that led up to the PVP https://www.haskell.org/haskellwiki/Package_versioning_policy specifying two values as the major version? I come from other tools that primarily use http://semver.org/ (or a variant) and I'm confused in what cases I should bump "A" but not "B" (or bump "B" but not "A")? A concrete example: If I make backwards incompatible changes to a package whose latest version is 1.0.x, should the next version be 2.0.x or 1.1.x? What sorts of things should I consider for choosing 2.0 over 1.1 and vice versa? Another question, by far most packages I have encountered either lead with a 0 or a 1 for "A". Does that have some bearing on the long term stability that package users should expect in the future? Finally, if "1.0.x.." is meant to convey a level of long term support, does "B" get rarely used? Since "C" version bumps to include backwards compatible additions, and "D"+ for backwards compatible bug fixes. (I know "D" isn't technically a PVP category, I'm just relating it to the patch version of semver). Thanks for your help! -Zach