Update compiler list in travis.yml.

Author: MrSmith33

.travis.yml

@@ -7,19 +7,17 @@ os:
 language: d
 
 d:
- - dmd-2.070.1
+ - dmd-2.071.0
+ - dmd-2.070.2
  - dmd-2.069.2
  - dmd-2.068.2
- - dmd-2.067.1
  - ldc-1.0.0-alpha1
+ - ldc-1.0.0
  - ldc-0.17.0
- - ldc-0.16.0
- - gdc-5.2.0
 
 matrix:
   allow_failures:
-   - d: gdc-5.2.0
-   - d: dmd-2.067.1
+   - ldc-1.0.0
 
 env:
   matrix: