Squashed commit of the following:

commit 5516cba
Author: JTFouquier <jennietf@gmail.com>
Date:   Fri Aug 31 11:44:54 2018 -0600

    py 3.4,.5,.7 test

commit 0d7cfa6
Author: JTFouquier <jennietf@gmail.com>
Date:   Fri Aug 31 11:40:35 2018 -0600

    test py 3.4 & 3.7 for bioconda

.travis.yml

@@ -3,6 +3,7 @@
 # modified from https://gist.github.com/dan-blanchard/7045057
 language: python
 python:
+  - "3.4"
   - "3.5"
   - "3.6"
 before_install: