udpate travis config

.travis.yml

@@ -1,15 +1,26 @@
 language: python
-python: 2.7
 sudo: false
-env:
-  - PLONE_VERSION=4.x
-  - PLONE_VERSION=5.x
+matrix:
+  include:
+    - python: "2.7"
+      env: PLONE_VERSION=4.3
+    - python: "2.7"
+      env: PLONE_VERSION=5.0
+    - python: "2.7"
+      env: PLONE_VERSION=5.1
+    - python: "2.7"
+      env: PLONE_VERSION=5.2
+    - python: "3.6"
+      env: PLONE_VERSION=5.2
+    - python: "3.7"
+      env: PLONE_VERSION=5.2
+      dist: xenial
+      sudo: true
+  fast_finish: true
 cache:
   pip: true
   directories:
     - $HOME/buildout-cache
-matrix:
-  fast_finish: true
 before_install:
   - mkdir -p $HOME/buildout-cache/{eggs,downloads}
   - mkdir $HOME/.buildout

base.cfg

@@ -0,0 +1,15 @@
+[buildout]
+package-name = plone.app.tiles
+package-extras = [test]
+parts +=
+    createcoverage
+
+[code-analysis]
+directory = plone
+flake8-ignore = E501,C901
+
+[versions]
+setuptools =
+zc.buildout =
+coverage = >=3.7
+plone.app.tiles =

test-4.3.cfg

@@ -0,0 +1,5 @@
+[buildout]
+extends =
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/test-4.3.x.cfg
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/qa.cfg
+    base.cfg

test-5.0.cfg

@@ -0,0 +1,5 @@
+[buildout]
+extends =
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/test-5.0.x.cfg
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/qa.cfg
+    base.cfg

test-5.1.cfg

@@ -0,0 +1,10 @@
+[buildout]
+extends =
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/test-5.1.x.cfg
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/qa.cfg
+    base.cfg
+
+versions = versions
+
+[versions]
+plone.autoform = 1.6.2

test-5.2.cfg

@@ -0,0 +1,21 @@
+[buildout]
+extends =
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/test-5.2.x.cfg
+    https://raw.githubusercontent.com/collective/buildout.plonetest/master/qa.cfg
+    base.cfg
+
+extensions = mr.developer
+auto-checkout =
+    plone.app.drafts
+    plone.subrequest
+
+[sources]
+plone.subrequest = git git://github.com/plone/plone.subrequest.git branch=master
+
+[versions]
+setuptools =
+zc.buildout =
+coverage = >=3.7
+plone.app.drafts =
+plone.behavior = >=1.1
+plone.subrequest =