vim-patch:7.4.521

Problem:    When using "vep" a mark is moved to the next line. (Maxi Padulo,
	    Issue 283)
Solution:   Decrement the line number. (Christian Brabandt)

https://code.google.com/p/vim/source/detail?r=v7-4-521

src/nvim/version.c

@@ -217,7 +217,7 @@ static int included_patches[] = {
   //524,
   //523 NA
   //522,
-  //521,
+  521,
   520,
   //519,
   518,