Merge pull request #178 from marrink-lab/drop_py3.4

Drop Py3.4 from Travis, switch "default" python to 3.7

.travis.yml

@@ -34,22 +34,18 @@ jobs:
     - python: "3.8-dev"
   include:
       #- python: "2.7"
-    - python: "3.4"
     - python: "3.5"
     - python: "3.6"
     - python: "3.7"
-      sudo: true
     - python: "3.5-dev"
     - python: "3.6-dev"
     - python: "3.7-dev"
-      sudo: true
     - python: "3.8-dev"
-      sudo: true
       env: WITH_SCIPY=false WITH_CODECOV=false
 
 
     - stage: docs
-      python: "3.5"
+      python: "3.7"
       addons: skip
       install:
         - pip install --upgrade -r requirements-docs.txt
@@ -59,7 +55,7 @@ jobs:
       after_success: skip
 
     - stage: pylint
-      python: "3.5"
+      python: "3.7"
       addons: skip
       install:
         - pip install --upgrade -r requirements-tests.txt
@@ -69,7 +65,7 @@ jobs:
         - python run_pylint.py --disable=fixme --fail-under=9.5 bin/martinize2
       after_success: skip
 #   - stage: deploy
-#     python: "3.5"
+#     python: "3.7"
 #     addons: skip
 #     env:
 #     script: skip

README.md

@@ -23,7 +23,7 @@ PRODUCTION.**
 
 ## Installation
 
-Martinize2 and vermouth require python 3.4 or greater. They can be installed
+Martinize2 and vermouth require python 3.5 or greater. They can be installed
 using the `pip` command:
 
     pip install git+https://github.com/marrink-lab/vermouth-martinize.git#vermouth