Merge pull request image-rs#118 from kevinmehall/rust-1.34

Bump minimum Rust version to 1.34.2

Author: fintelia

.travis.yml

@@ -1,6 +1,6 @@
 language: rust
 rust:
-  - 1.28.0
+  - 1.34.2
   - stable
   - beta
   - nightly

README.md

@@ -32,4 +32,4 @@ fn main() {
 ```
 
 ## Requirements
-This crate compiles only with rust >= 1.28.
+This crate compiles only with rust >= 1.34.

src/marker.rs

@@ -132,7 +132,6 @@ impl Marker {
             0xFD => Some(JPGn(13)),
             0xFE => Some(COM),
             0xFF => None, // Fill byte
-            _ => unreachable!(),
         }
     }
 }