Bump min required python version to 3.5

.azure-pipelines.yml

@@ -11,14 +11,14 @@ jobs:
 
     strategy:
       matrix:
-        Python27:
-          python.version: '2.7'
         Python35:
           python.version: '3.5'
         Python36:
           python.version: '3.6'
         Python37:
           python.version: '3.7'
+        Python37:
+          python.version: '3.8'
       maxParallel: 4
 
     steps:

setup.py

@@ -122,7 +122,7 @@ setup(
         [console_scripts]
         flaskbb=flaskbb.cli:flaskbb
     """,
-    python_requires=">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*",
+    python_requires=">=3.5",
     install_requires=install_requires,
     extras_require=extras_require,
     tests_require=tests_require,
@@ -134,11 +134,10 @@ setup(
         "Intended Audience :: End Users/Desktop",
         "License :: OSI Approved :: BSD License",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 2.7",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ],

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 skip_missing_interpreters = true
 envlist =
-    py{27,35,36,37},
+    py{35,36,37,38},
     coverage
 
 [testenv]