wheel_testing: Made travis pip installs verbose. Updated opencv version.

.travis.yml

@@ -5,10 +5,9 @@ python:
 - '2.7'
 - '3.5'
 - '3.6'
-- '3.7'
 
 install:
-- pip install -r requirements.txt -q
+- pip install -r requirements.txt
 script:
 - pip install cibuildwheel==0.10.1
 - cibuildwheel --output-dir wheelhouse

requirements.txt

@@ -1,3 +1,3 @@
-opencv_python==3.4.2.17
+opencv_python==4.0.0.21
 localpubsub==0.0.1
 numpy==1.16.1

setup.py

@@ -14,7 +14,7 @@ with open('README.md', 'r', encoding='utf-8') as f:
     readme = f.read()
 
 REQUIRES = [
-    "opencv_python==3.4.2.17"
+    "opencv_python==4.0.0.21"
     "localpubsub==0.0.1",
     "numpy==1.16.1"
 ]