Drop Python 3.5 support

.travis.yml

@@ -2,12 +2,11 @@ os: linux
 language: python
 jobs:
   include:
-    - python: "3.5"
     - python: "3.6"
     - python: "3.7"
     - python: "3.8"
-      env: "CC_TEST_REPORTER_ID=2a411f596959fc32f5d73f3ba7cef8cc4d5733299d742dbfc97fd6c190b9010c"
     - python: "3.9"
+      env: "CC_TEST_REPORTER_ID=2a411f596959fc32f5d73f3ba7cef8cc4d5733299d742dbfc97fd6c190b9010c"
 cache: pip
 git:
   depth: false
@@ -38,4 +37,4 @@ deploy:
     script: .github/deploy.sh
     on:
       branch: master
-      python: 3.8
+      python: 3.9

Jenkinsfile

@@ -1,9 +1,8 @@
 def pys = [
-    [name: 'Python 3.9', docker:'python:3.9-buster', tox:'py39', main: false],
+    [name: 'Python 3.9', docker:'python:3.9-buster', tox:'py39,flake8', main: true],
-    [name: 'Python 3.8', docker:'python:3.8-buster', tox:'py38,flake8', main: true],
+    [name: 'Python 3.8', docker:'python:3.8-buster', tox:'py38', main: false],
     [name: 'Python 3.7', docker:'python:3.7-buster', tox:'py37', main: false],
     [name: 'Python 3.6', docker:'python:3.6-buster', tox:'py36', main: false],
-    [name: 'Python 3.5', docker:'python:3.5-buster', tox:'py35', main: false],
 ]
 
 properties([

README.md

@@ -72,7 +72,7 @@ are old enough to view them.
 ### Dependencies
 
 Since dosage is written in [Python](http://www.python.org/), a Python
-installation is required: Dosage needs at least Python 3.5. Dosage requires
+installation is required: Dosage needs at least Python 3.6. Dosage requires
 some Python modules from PyPI, so installation with `pip` is recommended.
 
 ### Using the Windows binary

setup.cfg

@@ -1,4 +1,4 @@
-[metadata]'),
+[metadata]
 name = dosage
 description = a comic strip downloader and archiver
 long_description = file: README.md
@@ -18,7 +18,6 @@ classifiers =
     Programming Language :: Python
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
@@ -40,7 +39,7 @@ install_requires =
     requests>=2.0
     cached_property;python_version<'3.8'
     importlib_metadata;python_version<'3.8'
-python_requires = >=3.5
+python_requires = >=3.6
 setup_requires =
     setuptools>=38.3.0
     setuptools_scm
@@ -59,8 +58,8 @@ css =
 dev =
     allure-pytest
     flake8
-    flake8-2020;python_version>'3.5'
+    flake8-2020
-    flake8-breakpoint;python_version>'3.5'
+    flake8-breakpoint
     flake8-bugbear
     flake8-coding
     flake8-commas
@@ -70,10 +69,9 @@ dev =
     flake8-functions==0.0.4
     flake8-future-import
     flake8-logging-format
-    flake8-no-fstring;python_version>'3.5'
     flake8-pytest
-    flake8-pytest-style;python_version>'3.5'
+    flake8-pytest-style
-    flake8-strings;python_version>'3.5'
+    flake8-strings
     pytest-cov
     pytest-xdist
     responses

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py35, py36, py37, py38, py39, flake8
+envlist = py36, py37, py38, py39, flake8
 
 [testenv]
 commands =