Drop urllib3 requirement

Changes in `urllib3:2.0` made the parts we use private methods. this means
we should not have been using those and that we were incompatible with
v2. Replacing it with `urllib.parse` as a dependency gives us the same
results but with one less library to be compatible with.

Author: rdohms

requirements.txt

@@ -4,5 +4,4 @@ PyYAML==4.2b1
 requests==2.20.0
 sh==1.11
 six==1.10.0
-urllib3==1.23
 mock==2.0.0

setup.py

@@ -10,7 +10,7 @@
     version=VERSION,
     description="Python client for Usabilla API",
     license='MIT',
-    install_requires=['urllib3', 'requests'],
+    install_requires=['requests'],
     packages=find_packages(),
     py_modules=['usabilla'],
     author='Usabilla',

tests.py

@@ -84,6 +84,9 @@ def test_query_parameters(self):
         params = {'limit': 1, 'since': 1235454}
         self.client.set_query_parameters(params)
         self.assertEqual(self.client.get_query_parameters(), 'limit=1&since=1235454')
+        params = {'limit': 1, 'since': 1235454, 'text': 'the little old lady'}
+        self.client.set_query_parameters(params)
+        self.assertEqual(self.client.get_query_parameters(), 'limit=1&since=1235454&text=the+little+old+lady')
 
     def test_check_resource_validity(self):
         with self.assertRaises(ub.GeneralError):

usabilla.py

@@ -22,7 +22,7 @@
 import hashlib
 import hmac
 import requests
-import urllib3.request as urllib
+import urllib.parse
 
 from collections import OrderedDict
 
@@ -153,7 +153,7 @@ def set_query_parameters(self, parameters):
         :type parameters: dict
         """
 
-        self.query_parameters = urllib.urlencode(OrderedDict(sorted(parameters.items())))
+        self.query_parameters = urllib.parse.urlencode(OrderedDict(sorted(parameters.items())))
 
     def get_query_parameters(self):
         """Get the query parameters."""