patch 8.1.0634: text properties cannot cross line boundaries

Problem:    Text properties cannot cross line boundaries.
Solution:   Support multi-line text properties.
diff --git a/src/version.c b/src/version.c
index 6956225..2b1d397 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    634,
+/**/
     633,
 /**/
     632,