Drop support for python 3.3 & 3.4 (#72)

* Remove test for python 3.3 & 3.4

* Remove 3.3 and 3.4 from classifiers list

* Update python requires

.github/workflows/build.yaml

@@ -68,10 +68,6 @@ jobs:
             runs-on: ubuntu-20.04
           - python-version: "3.5"
             runs-on: ubuntu-20.04
-          - python-version: "3.4"
-            runs-on: ubuntu-18.04
-          - python-version: "3.3"
-            runs-on: ubuntu-18.04
     env:
       python_version_codecov: "3.11"
     runs-on: ${{ matrix.runs-on }}

setup.cfg

@@ -21,8 +21,6 @@ classifiers =
   Operating System :: OS Independent
   Programming Language :: Python :: 3
   Programming Language :: Python :: 3 :: Only
-  Programming Language :: Python :: 3.3
-  Programming Language :: Python :: 3.4
   Programming Language :: Python :: 3.5
   Programming Language :: Python :: 3.6
   Programming Language :: Python :: 3.7
@@ -37,7 +35,7 @@ classifiers =
 
 
 [options]
-python_requires = >=3.3
+python_requires = >=3.5
 packages = find:
 install_requires =
   flake8