PEP 11: Record WASI support

This is covered in PEP 816.

Author: brettcannon

peps/pep-0011.rst

@@ -273,6 +273,37 @@ locale and cannot be reproduced in an appropriately configured non-ASCII
 locale will be closed as "won't fix".
 
 
+WASI
+''''
+
+WASI support is defined in :pep:`816`.
+
+====== ==== ========
+Python WASI WASI SDK
+====== ==== ========
+3.15   0.1  33
+3.14   0.1  24
+3.13   0.1  24
+3.12   0.1  21
+3.11   0.1  21
+====== ==== ========
+
+All versions prior to Python 3.15 predate :pep:`816`. The version support for
+those earlier versions is based on what was supported when that PEP was
+written.
+
+WASI was a tier 3 platform according to :pep:`11` for Python 3.11 and 3.12.
+WASI became a tier 2 platform starting with Python 3.13.
+
+WASI 0.2 support has been skipped due to lack of time, to the point that it was
+deemed better to go straight to WASI 0.3 instead. This is based on a
+recommendation from the `Bytecode Alliance <https://bytecodealliance.org>`__.
+
+WASI SDK 26 and 27 have a
+`bug <https://github.com/WebAssembly/wasi-libc/issues/617>`__ which causes
+CPython to hang in certain situations, and so they have been skipped.
+
+
 Unsupporting platforms
 ======================