Update README

Signed-off-by: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>

README.rst

@@ -4,25 +4,27 @@
 
 Summary
 =========
-`pingparsing <https://github.com/thombashi/pingparsing>`__ is a CLI-tool/Python-library parser and transmitter for ping command.
+`pingparsing <https://github.com/thombashi/pingparsing>`__ is a CLI-tool/Python-library parser and transmitter for the ping command.
 
-.. image:: https://badge.fury.io/py/pingparsing.svg
+|PyPI pkg ver| |Supported Python impl| |Supported Python ver| |CI status| |CodeQL|
+
+.. |PyPI pkg ver| image:: https://badge.fury.io/py/pingparsing.svg
     :target: https://badge.fury.io/py/pingparsing
     :alt: PyPI package version
 
-.. image:: https://img.shields.io/pypi/pyversions/pingparsing.svg
+.. |Supported Python impl| image:: https://img.shields.io/pypi/implementation/pingparsing.svg
     :target: https://pypi.org/project/pingparsing
-    :alt: Supported Python versions
+    :alt: Supported Python implementations
 
-.. image:: https://img.shields.io/pypi/implementation/pingparsing.svg
+.. |Supported Python ver| image:: https://img.shields.io/pypi/pyversions/pingparsing.svg
     :target: https://pypi.org/project/pingparsing
-    :alt: Supported Python implementations
+    :alt: Supported Python versions
 
-.. image:: https://github.com/thombashi/pingparsing/workflows/Tests/badge.svg
-    :target: https://github.com/thombashi/pingparsing/actions?query=workflow%3ATests
-    :alt: Linux/macOS/Windows CI status
+.. |CI status| image:: https://github.com/thombashi/pingparsing/actions/workflows/ci.yml/badge.svg
+    :target: https://github.com/thombashi/pingparsing/actions/workflows/ci.yml
+    :alt: CI status of Linux/macOS/Windows
 
-.. image:: https://github.com/thombashi/pingparsing/actions/workflows/codeql-analysis.yml/badge.svg
+.. |CodeQL| image:: https://github.com/thombashi/pingparsing/actions/workflows/codeql-analysis.yml/badge.svg
     :target: https://github.com/thombashi/pingparsing/actions/workflows/codeql-analysis.yml
     :alt: CodeQL
 
@@ -486,7 +488,7 @@ Installation
 
 Dependencies
 ============
-- Python 3.6+
+- Python 3.7+
 - `Python package dependencies (automatically installed) <https://github.com/thombashi/pingparsing/network/dependencies>`__
 
 Optional Dependencies
@@ -520,6 +522,8 @@ Tested Environments
 +--------------+-----------------------------------+
 | Ubuntu 20.04 | ``iputils-ping 20190709-3``       |
 +--------------+-----------------------------------+
+| Ubuntu 22.04 | ``iputils-ping 20211215-1``       |
++--------------+-----------------------------------+
 | Debian 8.6   | ``iputils-ping 20121221-5+b2``    |
 +--------------+-----------------------------------+
 | Fedora 25    | ``iputils-20161105-1.fc25.x86_64``|
@@ -541,15 +545,23 @@ https://pingparsing.rtfd.io/
 
 Sponsors
 ====================================
-.. image:: https://avatars.githubusercontent.com/u/44389260?s=48&u=6da7176e51ae2654bcfd22564772ef8a3bb22318&v=4
+|chasbecker| |shiguredo| |b4tman| |Arturi0| |github|
+
+.. |chasbecker| image:: https://avatars.githubusercontent.com/u/44389260?s=48&u=6da7176e51ae2654bcfd22564772ef8a3bb22318&v=4
    :target: https://github.com/chasbecker
-   :alt: Charles Becker (chasbecker)
-.. image:: https://avatars.githubusercontent.com/u/46711571?s=48&u=57687c0e02d5d6e8eeaf9177f7b7af4c9f275eb5&v=4
-   :target: https://github.com/Arturi0
-   :alt: onetime: Arturi0
-.. image:: https://avatars.githubusercontent.com/u/3658062?s=48&v=4
+   :alt: ex-sponsor: Charles Becker (chasbecker)
+.. |shiguredo| image:: https://avatars.githubusercontent.com/u/2549434?s=48&v=4
+   :target: https://github.com/shiguredo
+   :alt: ex-sponsor: 時雨堂 (shiguredo)
+.. |b4tman| image:: https://avatars.githubusercontent.com/u/3658062?s=48&v=4
    :target: https://github.com/b4tman
    :alt: onetime: Dmitry Belyaev (b4tman)
+.. |Arturi0| image:: https://avatars.githubusercontent.com/u/46711571?s=48&u=57687c0e02d5d6e8eeaf9177f7b7af4c9f275eb5&v=4
+   :target: https://github.com/Arturi0
+   :alt: onetime: Arturi0
+.. |github| image:: https://avatars.githubusercontent.com/u/9919?s=48&v=4
+   :target: https://github.com/github
+   :alt: onetime: GitHub (github)
 
 `Become a sponsor <https://github.com/sponsors/thombashi>`__