don't test python 2.7 anymore, support is dropped

Byron · Byron · commit c880f6b05507 · 2020-02-15T09:48:51.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,5 @@
 language: python
 python:
-  - "2.7"
   - "3.4"
   - "3.5"
   - "3.6"

-Original file line number
+Diff line change
 language: python
 python:
 -  - "2.7"
   - "3.4"
   - "3.5"
   - "3.6"