upgrade bindgen to work around rust-lang/rust-bindgen#1248 (#63)

pmarks · johanneskoester · commit f523ffa2d983 · 2018-03-26T13:10:41.000+02:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -34,4 +34,4 @@ serde_json = "1.0"
 
 [build-dependencies]
 fs-utils = "1.0"
-bindgen = "0.32.1"
+bindgen = "0.35.0"
