Merge pull request #407 from Mark-Simulacrum/1.38

Add spacer line between headers

Author: pietroalbini

posts/2019-09-26-Rust-1.38.0.md

@@ -19,6 +19,8 @@ If you don't have it already, you can [get `rustup`][install] from the appropria
 
 ## What's in 1.38.0 stable
 
+The highlight of this release is pipelined compilation.
+
 ### Pipelined compilation
 
 [internals-pipelined]: https://internals.rust-lang.org/t/evaluating-pipelined-rustc-compilation/10199