Drop support for Python 3.5

.travis.yml

@@ -6,7 +6,6 @@ python:
   - "3.6"
   - "3.7"
   - "3.8"
-  - "3.5"
 
 # Executed for 3.5 AND 3.5 as the first "test" stage:
 script:

setup.py

@@ -74,8 +74,8 @@ setup(
         "Intended Audience :: End Users/Desktop",
         "Topic :: Database",
         "License :: OSI Approved :: Apache Software License",
+        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.5",
     ],
 )