What is the minimum supported mw version for core and compat?

It looks like the lowest family version() are.. core: lockwiki with 1.15.1 (not confirmed as special:version requires registration) compat: wesolve with 1.5.7, loveto with 1.8.2, and then wikitravel_shared with 1.10.1 and mozilla with 1.10.2, wikibond with 1.11alpha and twcareer & celtic & botwiki with 1.11.0, wekey & ubuntutw & openttd with 1.12.0 & krefeldwiki with 1.12alpha

Re wesolve, wordsandmore.org is no longer a wiki.

Re loveto, lovetoknow.com/1911encyclopedia.org/webguru.com are in various states of 'no longer a wiki'.

wikitravel shared, it is now 1.22 (http://wikitravel.org/shared/Special:Version)

mozilla, it is now 1.19.11

Re wikibond & twcareer & celtic & ubuntutw, they appear to be dead.

botwiki is now 1.17

wekey is now 1.16

openttd is now 1.19.1

krefeldwiki is still 1.12alpha!

So, 1.12alpha is the lowest living mw that we have a family file for.