.travis.yml in fusuma-plugin-tap-0.1.0 vs .travis.yml in fusuma-plugin-tap-0.1.1

@@ -1,7 +1,21 @@
 ---
 sudo: false
 language: ruby
 cache: bundler
+
+env:
+  matrix:
+    - SPEC_LIBINPUT_VERSION=1.10.4
+    - SPEC_LIBINPUT_VERSION=1.14.1
+
+cache:
+  directories:
+  - vendor/bundle
+
 rvm:
-  - 2.4.1
-before_install: gem install bundler -v 2.0.1
+  - 2.3.1
+  - 2.4
+  - 2.5
+  - 2.6
+
+before_install: gem install bundler --no-document -v 2.0.1