This is my favourite rant on the topic of software upgrades: http://stevelosh.com/blog/2012/04/volatile-software/ http://stevelosh.com/blog/2012/04/volatile-so

This is my favourite rant on the topic of software upgrades: http://stevelosh.com/blog/2012/04/volatile-software/ http://stevelosh.com/blog/2012/04/volatile-software/ Boy, how I dislike upgrading Django. Look at all this breakage (and this is only the intentional, documented changes, and only across one release): https://docs.djangoproject.com/en/1.9/releases/1.9/#backwards-incompatible-changes-in-1-9 https://docs.djangoproject.com/en/1.9/releases/1.9/#backward... I appreciate much more policies like these: Suggestions to change the default output of these commands will not be treated with patience. https://www.mercurial-scm.org/wiki/CompatibilityRules#Introduction https://www.mercurial-scm.org/wiki/CompatibilityRules#Introd...