ci(travis): remove python 3.5 testing and add verbose tox output

Author: apaparazzi0329

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python:
-- 3.5
 - 3.6
 - 3.7
 - 3.8
@@ -16,7 +15,7 @@ before_script:
 - pip3 install --editable .
 script:
 - pip3 install -U python-dotenv
-- tox
+- tox -vv
 before_deploy:
 - pip3 install bumpversion pypandoc
 - sudo apt-get update

setup.py

@@ -64,7 +64,7 @@ def run_tests(self):
       version=__version__,
       description='Client library to use the IBM Watson Services',
       license='Apache 2.0',
-      install_requires=['requests>=2.0, <3.0', 'python_dateutil>=2.5.3', 'websocket-client==0.48.0', 'ibm_cloud_sdk_core>=3.3.6'],
+      install_requires=['requests>=2.0, <3.0', 'python_dateutil>=2.5.3', 'websocket-client==0.48.0', 'ibm_cloud_sdk_core>=3.3.6, == 3.*'],
       tests_require=['responses', 'pytest', 'python_dotenv', 'pytest-rerunfailures', 'tox'],
       cmdclass={'test': PyTest},
       author='IBM Watson',

tox.ini

@@ -1,8 +1,8 @@
 [tox]
-envlist = lint, py35, py36, py37
+envlist = lint, py36, py37, py38
 
 [testenv:lint]
-basepython = python3.7
+basepython = python3.8
 deps = pylint
 commands = pylint ibm_watson test examples