Bump to 0.3.21

alexcrichton · alexcrichton · commit fd684515399f · 2019-05-23T14:19:16.000-07:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "backtrace"
-version = "0.3.20"
+version = "0.3.21"
 authors = ["Alex Crichton <alex@alexcrichton.com>",
            "The Rust Project Developers"]
 license = "MIT/Apache-2.0"
