Merge pull request #19 from end2endzone/feature-issue17

Deprecate AppVeyor-based compilation pipeline

Author: end2endzone

CHANGES

@@ -1,6 +1,7 @@
 Changes for 2.4.0
 
 * Fixed issue #15 - Compilation fails with the ESP32 core version 3.x.
+* Fixed issue #17 - Deprecate AppVeyor-based compilation pipeline.
 
 
 Changes for 2.3.1

README.md

@@ -28,16 +28,9 @@ Build:
 
 | Service | Build | Tests |
 |----|-------|-------|
-| AppVeyor | [![Build status](https://img.shields.io/appveyor/ci/end2endzone/AnyRtttl/master.svg?logo=appveyor)](https://ci.appveyor.com/project/end2endzone/AnyRtttl) | [![Tests status](https://img.shields.io/appveyor/tests/end2endzone/AnyRtttl/master.svg?logo=appveyor)](https://ci.appveyor.com/project/end2endzone/AnyRtttl/branch/master/tests) |
 | Windows Server 2019 | [![Build on Windows](https://github.com/end2endzone/AnyRtttl/actions/workflows/build_windows.yml/badge.svg)](https://github.com/end2endzone/AnyRtttl/actions/workflows/build_windows.yml) | [![Tests on Windows](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/end2endzone/58cf6c72c08e706335337d5ef9ca48e8/raw/AnyRtttl.master.Windows.json)](https://github.com/end2endzone/AnyRtttl/actions/workflows/build_windows.yml) |
 | Ubuntu 22.04        | [![Build on Linux](https://github.com/end2endzone/AnyRtttl/actions/workflows/build_linux.yml/badge.svg)](https://github.com/end2endzone/AnyRtttl/actions/workflows/build_linux.yml)       | [![Tests on Linux](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/end2endzone/58cf6c72c08e706335337d5ef9ca48e8/raw/AnyRtttl.master.Linux.json)](https://github.com/end2endzone/AnyRtttl/actions/workflows/build_linux.yml)       |
 
-Statistics:
-
-| AppVeyor                                                                                                                                         | GitHub                                                                                                                          |
-|--------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------|
-| [![Statistics](https://buildstats.info/appveyor/chart/end2endzone/AnyRtttl)](https://ci.appveyor.com/project/end2endzone/AnyRtttl/branch/master) | [![Statistics](https://buildstats.info/github/chart/end2endzone/AnyRtttl)](https://github.com/end2endzone/AnyRtttl/actions) |
-