give up support for Python 3.3

.travis.yml

@@ -2,7 +2,6 @@ sudo: false
 language: python
 python:
   - 2.7
-  - 3.3
   - 3.4
   - 3.5
   - 3.6

README.md

@@ -202,7 +202,7 @@ Enjoy!
 
 ## Supported Python Versions
 
-Python `2.7`, `3.3`, `3.4`, `3.5` and `3.6`.
+Python `2.7`, `3.4`, `3.5` and `3.6`.
 
 `ApiTestEngine` has been tested on `macOS`, `Linux` and `Windows` platforms.
 

requirements_dev.txt

@@ -4,5 +4,4 @@ PyYAML
 coveralls
 coverage
 -e git+https://github.com/debugtalk/PyUnitReport.git#egg=PyUnitReport
--e git+https://github.com/debugtalk/jenkins-mail-py.git#egg=jenkins-mail-py
 -e git+https://github.com/locustio/locust.git#egg=locustio

setup.py

@@ -30,26 +30,20 @@ setup(
         "PyUnitReport"
     ],
     extras_require={
-        'mail': [
+        'locustio': [
-            "jenkins-mail-py"
-        ],
-        'locust': [
             "locustio"
         ]
     },
     dependency_links=[
         "git+https://github.com/debugtalk/PyUnitReport.git#egg=PyUnitReport-0",
-        "git+https://github.com/debugtalk/jenkins-mail-py.git#egg=jenkins-mail-py-0",
         "git+https://github.com/locustio/locust.git#egg=locust-0"
     ],
     classifiers=[
         "Development Status :: 3 - Alpha",
         'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.6'
-        'Programming Language :: Python :: 3.7-dev'
     ],
     entry_points={
         'console_scripts': [