docs: update readme section of supported platforms (#94)

Author: nfrechette

README.md

@@ -1,6 +1,5 @@
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@@ -36,18 +35,15 @@ Unicode formats other than UTF-8 aren't supported.
 
 ## Supported platforms
 
-*  Windows VS2015 x86 and x64
-*  Windows (VS2017 to VS2022) x86, x64, and ARM64
-*  Windows (VS2017 to VS2022) with clang x86 and x64
-*  Linux (gcc 5 to 13) x86 and x64
-*  Linux (clang 4 to 15) x86 and x64
-*  OS X (XCode 12.5, 13.2, 14.2) x64 and ARM64
-*  Android (NDK 21) ARMv7-A and ARM64
-*  iOS (Xcode 10.3, 11.7, 12.5, 13.2, 14.2) ARM64
-*  Emscripten (1.39.11) WASM
-*  MSYS2 x64
-
-The above supported platform list is only what is tested every release but if it compiles, it should run just fine.
+Continuous integration tests a variety of platforms and configurations but it generally runs as-is anywhere where C++11 (or later) is supported. CI currently tests:
+
+*  Windows VS2022: x86, x64, ARM64
+*  Linux GCC 12+: x86, x64
+*  Linux Clang 15+: x86, x64
+*  OS X XCode 15+: ARM64
+*  Emscripten 1.39.11: WASM
+
+Each releases is also manually tested on iOS and Android.
 
 ## External dependencies