.travis.yml.tt in microgem-1.0.18

- old
+ new

@@ -1,26 +1,18 @@
 sudo: false
 language: ruby
 
 rvm:
+- 2.6
+- 2.5
+- 2.4
+- 2.3
 - ruby-head
-- 2.6.2
-- 2.5.5
-- 2.4.5
-- 2.3.8
-- 2.2
-- 2.1
-- 2.0
-- jruby-head
 - jruby-9.2.6.0
 - truffleruby
 
 matrix:
   allow_failures:
     - rvm: ruby-head
-    - rvm: jruby-head
     - rvm: truffleruby
-    - rvm: 2.3.8
-    - rvm: 2.2
-    - rvm: 2.1
-    - rvm: 2.0
+    - rvm: 2.3
 #   fast_finish: true