Add gitlab support, py3.7 checks. Also removes py34 tests

.gitlab-ci.yml

@@ -0,0 +1,25 @@
+image: python
+
+stages:
+    - test
+
+before_script:
+    - curl -O https://bootstrap.pypa.io/get-pip.py
+    - python get-pip.py
+    - pip install tox
+
+python35:
+    image: python:3.5
+    stage: test
+    script: tox -e py35
+           
+python36:
+    image: python:3.6
+    stage: test
+    script: tox -e py36
+
+lint:
+    image: python:3.6
+    stage: test
+    script: tox -e lint
+

.travis.yml

@@ -1,8 +1,6 @@
 matrix:
   fast_finish: true
   include:
-    - python: "3.4.2"
-      env: TOXENV=py34
     - python: "3.6"
       env: TOXENV=lint
     - python: "3.5"
@@ -13,6 +11,8 @@ matrix:
       env: TOXENV=py36
     - python: "3.6"
       env: TOXENV=build
+    - python: "3.7-dev"
+      env: TOXENV=py37
 
 install: pip install -U tox coveralls
 language: python