Thread:User talk:^demon/Instructions to install/update extensions/reply

Any extension in Git now has a REL1_19 and REL1_20 branch, like they did in SVN (with REL1_18 and below). Extensions in SVN are no longer supported by ExtensionDistributor, nor are REL1_18 and below (since they are unsupported versions of MediaWiki). We will create REL1_21 branches when 1.21 is released.