Use travis-perl helpers, test with more Perls, use containers, and mo…

…re travis goodness

.travis.yml

@@ -1,14 +1,30 @@
+---
+sudo: false
+addons:
+  apt:
+    packages:
+      - aspell
+      - aspell-en
 language: perl
 perl:
-    - "5.19"
-    - "5.18"
-    - "5.16"
-    - "5.14"
-    - "5.12"
-    - "5.10"
-install:
-    - cpanm -q --notest Dist::Zilla
-    - dzil authordeps --missing | cpanm -q --notest
-    - dzil listdeps --author --missing | cpanm -q --notest
-script:
-    - dzil test --all
+  - blead
+  - dev
+  - '5.22'
+  - '5.20'
+  - '5.18'
+  - '5.16'
+  - '5.14'
+  - '5.12'
+  - '5.10'
+matrix:
+  allow_failures:
+    - perl: blead
+  include:
+    - env: COVERAGE=1
+      perl: '5.22'
+env:
+  global:
+    - RELEASE_TESTING=1
+    - AUTHOR_TESTING=1
+before_install:
+  - eval $(curl https://travis-perl.github.io/init) --auto