Extend CI to Python{3.7, 3.8} (#34)

.travis.yml

@@ -9,6 +9,8 @@ services:
 
 python:
   - "3.6"
+  - "3.7"
+  - "3.8"
 
 before_install:
   - sudo apt-get -qq update
@@ -45,4 +47,5 @@ deploy:
     password:
       secure: "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"
     on:
+      python: "3.6"
       tags: true

README.md

@@ -1,7 +1,7 @@
 [![PyPI version](https://badge.fury.io/py/webviz-core-components.svg)](https://badge.fury.io/py/webviz-core-components)
 [![Build Status](https://travis-ci.org/equinor/webviz-core-components.svg?branch=master)](https://travis-ci.org/equinor/webviz-core-components)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/e5f81735a1a9423eb7be3fee8e2d30ee)](https://www.codacy.com/manual/webviz/webviz-core-components?utm_source=github.com&utm_medium=referral&utm_content=equinor/webviz-core-components&utm_campaign=Badge_Grade)
-[![Python 3.6+](https://img.shields.io/badge/python-3.6+-blue.svg)](https://www.python.org/)
+[![Python 3.6 | 3.7 | 3.8](https://img.shields.io/badge/python-3.6%20|%203.7%20|%203.8-blue.svg)](https://www.python.org/)
 [![Code style: black](https://img.shields.io/badge/code%20style-black%20%28Python%29-000000.svg)](https://github.com/psf/black)
 [![code style: prettier](https://img.shields.io/badge/code_style-prettier%20%28JavaScript%29-ff69b4.svg)](https://github.com/prettier/prettier)