Fix rand compilation issue

Author: Danny Browning

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 # - Update CHANGELOG.md.
 # - Update doc URL.
 # - Create "v0.1.x" git tag.
-version = "0.3.0-alpha.6"
+version = "0.3.0-alpha.7"
 license = "MIT"
 readme = "README.md"
 description = """