Add table to Supported Platforms section of README

Author: ednolan

README.md

@@ -71,19 +71,13 @@ when configuring the project.
 
 ### Supported Platforms
 
-This project officially supports:
-
-* GCC versions 14–15
-* LLVM Clang++ (with libstdc++ or libc++) versions 18–21
-* AppleClang version 17.0.0 (i.e., the [latest version on GitHub-hosted macOS runners](https://github.com/actions/runner-images/blob/main/images/macos/macos-15-arm64-Readme.md))
-* MSVC version 19.44.35215.0 (i.e., the [latest version on GitHub-hosted Windows runners](https://github.com/actions/runner-images/blob/main/images/windows/Windows2022-Readme.md))
-
-> [!NOTE]
->
-> Versions outside of this range would likely work as well,
-> especially if you're using a version above the given range
-> (e.g. HEAD/ nightly).
-> These development environments are verified using our CI configuration.
+| Compiler   | Version | C++ Standards | Standard Library  |
+|------------|---------|---------------|-------------------|
+| GCC        | 15-14   | C++26, C++23  | libstdc++         |
+| Clang      | 22-19   | C++26, C++23  | libstdc++, libc++ |
+| Clang      | 18      | C++23         | libstdc++         |
+| AppleClang | latest  | C++26, C++23  | libc++            |
+| MSVC       | latest  | C++23         | MSVC STL          |
 
 ## Development