patch 8.1.0682: text properties not adjusted when backspacing replaced text

Problem:    Text properties are not adjusted when backspacing replaced text.
Solution:   Keep text properties on text restored in replace mode.
diff --git a/src/version.c b/src/version.c
index cd5e386..a7bee90 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    682,
+/**/
     681,
 /**/
     680,