patch 8.0.0239: no CI with an address sanitizer
Problem: The address sanitizer sometimes finds errors, but it needs to be
run manually.
Solution: Add an environment to Travis with clang and the address sanitizer.
(Christian Brabandt) Also include changes only on github.
diff --git a/src/version.c b/src/version.c
index d895216..36dbe3a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 239,
+/**/
238,
/**/
237,