Merge branch 'maint-0.3.0' into maint-0.3.1

changes/bug22446

@@ -0,0 +1,4 @@
+  o Minor features (code style, backport from 0.3.1.3-alpha):
+    - Add "Falls through" comments to our codebase, in order to silence
+      GCC 7's -Wimplicit-fallthrough warnings. Patch from Andreas
+      Stieger. Closes ticket 22446.