MNT: Avoid testing via deprecated setup.py test_suite

Author: kernc

.travis.yml

@@ -21,7 +21,7 @@ matrix:
         - pip install flake8 coverage
       script:
         - flake8
-        - BOKEH_BROWSER=none catchsegv coverage run setup.py test
+        - BOKEH_BROWSER=none catchsegv coverage run -m backtesting.test
       after_success:
         - bash <(curl -s https://codecov.io/bash)
 
@@ -42,4 +42,4 @@ install:
   - pip install --pre .[test]
 
 script:
-  - BOKEH_BROWSER=none time catchsegv python setup.py test
+  - BOKEH_BROWSER=none time catchsegv python -m backtesting.test

setup.py

@@ -51,7 +51,6 @@
                 'flake8',
             ],
         },
-        test_suite="backtesting.test",
         python_requires='>=3.4',
         author='Zach Lûster',
         classifiers=[