Drop support for Python 3.6

Python 3.6 has reached its end-of-life date, and no longer supported by the latest version of pip, which is breaking our CI scripts.

.ci/azure-pipelines.yml

@@ -51,8 +51,6 @@ stages:
  container: 'quay.io/pypa/manylinux2010_x86_64:latest'
  strategy:
  matrix:
- Python3.6:
- python.version: 3.6
  Python3.7:
  python.version: 3.7
  Python3.8:
@@ -69,8 +67,6 @@ stages:
  vmImage: 'windows-2019'
  strategy:
  matrix:
- Python3.6:
- python.version: 3.6
  Python3.7:
  python.version: 3.7
  Python3.8:
@@ -85,8 +81,6 @@ stages:
  vmImage: 'macOS-1015'
  strategy:
  matrix:
- Python3.6:
- python.version: 3.6
  Python3.7:
  python.version: 3.7
  Python3.8:

.ci/azure-python-build.yml

@@ -24,9 +24,6 @@ steps:
  set -e
 
  case $(python.version) in
- 3.6)
- LANG_ABI_VER="cp36-cp36m"
- ;;
  3.7)
  LANG_ABI_VER="cp37-cp37m"
  ;;
@@ -46,9 +43,6 @@ steps:
  set -e
 
  case $(python.version) in
- 3.6)
- FULL_VERSION=3.6.8
- ;;
  3.7)
  FULL_VERSION=3.7.9
  ;;

setup.py

@@ -37,7 +37,7 @@ def load_readme():
  ),
  long_description=load_readme(),
  long_description_content_type="text/markdown",
- python_requires=">=3.6",
+ python_requires=">=3.7",
  url="https:/tomtung/omikuji",
  license="MIT",
  packages=["omikuji"],
@@ -50,8 +50,6 @@ def load_readme():
  milksnake_universal=False,
  classifiers=[
  "Programming Language :: Python :: 3",
- "Programming Language :: Python :: 3.5",
- "Programming Language :: Python :: 3.6",
  "Programming Language :: Python :: 3.7",
  "Programming Language :: Python :: 3.8",
  "Programming Language :: Python :: 3.9",