Update to latest gomatrix. Things are broken

vendor/github.com/renstrom/fuzzysearch/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Peter Renström
+Copyright (c) 2018 Peter Lithammer
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

vendor/github.com/renstrom/fuzzysearch/fuzzy/fuzzy.go

@@ -112,10 +112,7 @@ Outer:
 	}
 
 	// Count up remaining char
-	for len(target) > 0 {
-		target = target[utf8.RuneLen(rune(target[0])):]
-		runeDiff++
-	}
+	runeDiff += utf8.RuneCountInString(target)
 
 	return runeDiff
 }