patch 8.0.0080
Problem:    The OS X build fails on Travis.
Solution:   Skip the virtual framebuffer on OS X.
diff --git a/src/version.c b/src/version.c
index 88adc6d..d4b84c5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    80,
+/**/
     79,
 /**/
     78,