chore: Update slice-deque to 0.3

ignatenkobrain · web-flow · commit 14db3a9e0a45 · 2019-12-08T13:56:17.000+01:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -21,7 +21,7 @@ memchr = "2.0"
 
 # `slice_deque` is only supported on platforms with virtual memory
 [target.'cfg(any(unix, windows))'.dependencies.slice-deque]
-version = "0.2"
+version = "0.3"
 optional = true
 
 [features]
