Updated the readme

Author: bblanchon

README.md

@@ -33,15 +33,15 @@ ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
     * [Optionally works without heap memory (zero malloc)](https://arduinojson.org/v6/api/staticjsondocument/?utm_source=github&utm_medium=readme)
     * Deduplicates strings
 * Versatile
-    * [Supports custom allocators (to use external RAM chip, for example)](https://arduinojson.org/v6/how-to/use-external-ram-on-esp32/?utm_source=github&utm_medium=readme)
-    * Supports [Arduino's `String`](https://arduinojson.org/v6/api/config/enable_arduino_string/?utm_source=github&utm_medium=readme) and [STL's `std::string`](https://arduinojson.org/v6/api/config/enable_std_string/?utm_source=github&utm_medium=readme)
-    * Supports [Arduino's `Stream`](https://arduinojson.org/v6/api/config/enable_arduino_stream/?utm_source=github&utm_medium=readme) and [STL's `std::istream`/`std::ostream`](https://arduinojson.org/v6/api/config/enable_std_stream/?utm_source=github&utm_medium=readme)
-    * [Supports Flash strings](https://arduinojson.org/v6/api/config/enable_progmem/?utm_source=github&utm_medium=readme)
+    * Supports [custom allocators (to use external RAM chip, for example)](https://arduinojson.org/v6/how-to/use-external-ram-on-esp32/?utm_source=github&utm_medium=readme)
+    * Supports [`String`](https://arduinojson.org/v6/api/config/enable_arduino_string/?utm_source=github&utm_medium=readme), [`std::string`](https://arduinojson.org/v6/api/config/enable_std_string/?utm_source=github&utm_medium=readme) and [`std::string_view`](https://arduinojson.org/v6/api/config/enable_string_view/?utm_source=github&utm_medium=readme)
+    * Supports [`Stream`](https://arduinojson.org/v6/api/config/enable_arduino_stream/?utm_source=github&utm_medium=readme) and [`std::istream`/`std::ostream`](https://arduinojson.org/v6/api/config/enable_std_stream/?utm_source=github&utm_medium=readme)
+    * Supports [Flash strings](https://arduinojson.org/v6/api/config/enable_progmem/?utm_source=github&utm_medium=readme)
     * Supports [custom readers](https://arduinojson.org/v6/api/json/deserializejson/?utm_source=github&utm_medium=readme#custom-reader) and [custom writers](https://arduinojson.org/v6/api/json/serializejson/?utm_source=github&utm_medium=readme#custom-writer)
-    * Supports custom converters
+    * Supports [custom converters](https://arduinojson.org/news/2021/05/04/version-6-18-0/?utm_source=github&utm_medium=readme)
 * Portable
     * Usable on any C++ project (not limited to Arduino)
-    * Compatible with C++98
+    * Compatible with C++98, C++11, C++14 and C++17
     * Zero warnings with `-Wall -Wextra -pedantic` and `/W4`
     * [Header-only library](https://en.wikipedia.org/wiki/Header-only)
     * Works with virtually any board
@@ -87,10 +87,11 @@ ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
     * [Examples](https://arduinojson.org/v6/example/?utm_source=github&utm_medium=readme)
     * [How-tos](https://arduinojson.org/v6/example/?utm_source=github&utm_medium=readme)
     * [FAQ](https://arduinojson.org/v6/faq/?utm_source=github&utm_medium=readme)
+    * [Troubleshooter](https://arduinojson.org/v6/troubleshooter/?utm_source=github&utm_medium=readme)
     * [Book](https://arduinojson.org/book/?utm_source=github&utm_medium=readme)
     * [Changelog](CHANGELOG.md)
 * Vibrant user community
-    * Most popular of all Arduino libraries on [GitHub](https://github.com/search?o=desc&q=arduino+library&s=stars&type=Repositories) and [PlatformIO](https://platformio.org/lib/search)
+    * Most popular of all Arduino libraries on [GitHub](https://github.com/search?o=desc&q=arduino+library&s=stars&type=Repositories)
     * [Used in hundreds of projects](https://www.hackster.io/search?i=projects&q=arduinojson)
     * [Responsive support](https://github.com/bblanchon/ArduinoJson/issues?q=is%3Aissue+is%3Aclosed)
 
@@ -133,9 +134,11 @@ serializeJson(doc, Serial);
 
 See the [tutorial on arduinojson.org](https://arduinojson.org/doc/encoding/?utm_source=github&utm_medium=readme)
 
-## Support the project
+## Support the project ❤️
 
-Do you like this library? Please [star this project on GitHub](https://github.com/bblanchon/ArduinoJson/stargazers)!
+Do you like this library?  
+Please [star this project on GitHub](https://github.com/bblanchon/ArduinoJson/stargazers)!
 
 What? You don't like it but you *love* it?  
-We don't take donations anymore, but [we sell a book](https://arduinojson.org/book/?utm_source=github&utm_medium=readme), so you can help and learn at the same time.
+You can support the project by [purchasing my book](https://arduinojson.org/book/?utm_source=github&utm_medium=readme).
+Alternatively, you can make a recurring donation via [GitHub Sponsors](https://github.com/sponsors/bblanchon).