Add patch

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

chrono-fix-metadata.diff

@@ -0,0 +1,16 @@
+--- chrono-0.4.8/Cargo.toml	1970-01-01T00:00:00+00:00
++++ chrono-0.4.8/Cargo.toml	2019-09-01T15:08:26.432590+00:00
+@@ -73,13 +73,6 @@
+ [features]
+ clock = ["time"]
+ default = ["clock"]
+-[target."cfg(all(target_arch = \"wasm32\", not(target_os = \"emscripten\")))".dependencies.js-sys]
+-version = "0.3"
+-
+-[target."cfg(all(target_arch = \"wasm32\", not(target_os = \"emscripten\")))".dependencies.wasm-bindgen]
+-version = "0.2"
+-[target."cfg(all(target_arch = \"wasm32\", not(target_os = \"emscripten\")))".dev-dependencies.wasm-bindgen-test]
+-version = "0.2"
+ [badges.appveyor]
+ repository = "chronotope/chrono"
+