.travis.yml in ruby-vips-2.0.13 vs .travis.yml in ruby-vips-2.0.14

@@ -1,14 +1,13 @@
-dist: trusty
-sudo: false
+dist: xenial
 
 env:
   global:
     - NOKOGIRI_USE_SYSTEM_LIBRARIES=true
     - VIPS_VERSION_MAJOR=8
-    - VIPS_VERSION_MINOR=6
-    - VIPS_VERSION_MICRO=4
+    - VIPS_VERSION_MINOR=7
+    - VIPS_VERSION_MICRO=2
     - PATH=$HOME/vips/bin:$PATH
     - LD_LIBRARY_PATH=$HOME/vips/lib:$LD_LIBRARY_PATH
     - PKG_CONFIG_PATH=$HOME/vips/lib/pkgconfig:$PKG_CONFIG_PATH
 
 addons:
@@ -31,10 +30,11 @@
       - libpoppler-glib-dev
       - librsvg2-dev
       - libwebp-dev
 
 cache:
+  bundler: true
   directories:
     - $HOME/vips
 
 language: ruby
 rvm:
@@ -42,14 +42,21 @@
   - 2.1
   - 2.2
   - 2.3
   - 2.4
   - 2.5
+  - 2.6
 
-script: "bundle exec rake"
+script: bundle exec rake spec
 
 gemfile:
   - Gemfile
 
 before_install:
   - uname -a
-  - bash install-vips.sh 
+  - bash install-vips.sh
+
+jobs:
+  include:
+    - stage: Lint
+      rvm: 2.6
+      script: bundle exec rake rubocop