Update test matrix emacs versions

Author: dan sutton

.travis.yml

@@ -6,11 +6,8 @@ script:
 
 env:
   matrix:
-    - EVM_EMACS=emacs-24.5-bin
-    - EVM_EMACS=emacs-24.4-bin
-    - EVM_EMACS=emacs-24.3-bin
-    - EVM_EMACS=emacs-24.2-bin
-    - EVM_EMACS=emacs-24.1-bin
+    - EVM_EMACS=emacs-25.3-bin
+    - EVM_EMACS=emacs-26.1-bin
     - EVM_EMACS=emacs-git-snapshot
 matrix:
   fast_finish: true