vim-patch:7.4.1658

Problem:    A plugin does not know when VimEnter autocommands were already
            triggered.
Solution:   Add the v:vim_did_enter variable.

1473551a44

src/nvim/version.c

@@ -786,7 +786,7 @@ static int included_patches[] = {
   // 1661 NA
   // 1660,
   // 1659 NA
-  // 1658,
+  1658,
   // 1657 NA
   // 1656,
   // 1655 NA