Update to edition 2018

Author: quodlibetor

Cargo.toml

@@ -2,6 +2,7 @@
 name = "git-fixup"
 version = "0.1.5"
 authors = ["Brandon W Maister <[email protected]>"]
+edition = "2018"
 
 [dependencies]
 git2 = { version = "0.10.0", default_features = false }

src/main.rs

@@ -12,12 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-extern crate console;
-extern crate dialoguer;
-extern crate git2;
-#[macro_use]
-extern crate structopt;
-
 use std::env;
 use std::error::Error;
 use std::process::Command;