Update docs post Python 3.11 (#209)

* Post py311 readme update

* Add document for tomllib

README.md

@@ -32,8 +32,8 @@
 Tomli is a Python library for parsing [TOML](https://toml.io).
 It is fully compatible with [TOML v1.0.0](https://toml.io/en/v1.0.0).
 
-A version of Tomli, the new `tomllib` module,
-will be added to the standard library in Python 3.11
+A version of Tomli, the `tomllib` module,
+was added to the standard library in Python 3.11
 via [PEP 680](https://www.python.org/dev/peps/pep-0680/).
 Tomli continues to provide a backport on PyPI for Python versions
 where the standard library module is not available
@@ -150,10 +150,8 @@ tomllib.loads("['This parses fine with Python 3.6+']")
   2.3x as fast as [toml](https://pypi.org/project/toml/)
 - outputs [basic data types](#how-do-toml-types-map-into-python-types) only
 - 100% spec compliant: passes all tests in
-  [a test set](https://github.com/toml-lang/compliance/pull/8)
-  soon to be merged to the official
-  [compliance tests for TOML](https://github.com/toml-lang/compliance)
-  repository
+  [BurntSushi/toml-test](https://github.com/BurntSushi/toml-test)
+  test suite
 - thoroughly tested: 100% branch coverage
 
 ### Is comment preserving round-trip parsing supported?<a name="is-comment-preserving-round-trip-parsing-supported"></a>

tomllib.md

@@ -0,0 +1,55 @@
+# `tomllib` – Tomli in the standard library
+
+Tomli was added to the Python standard library in Python 3.11.
+
+Relevant links:
+
+- Python Issue Tracker: https://bugs.python.org/issue40059
+- Tomli issue tracker: https://github.com/hukkin/tomli/issues/141
+- Discussion on PyPA "blessing" a TOML parser and/or including one in the standard library: https://discuss.python.org/t/adopting-recommending-a-toml-parser/4068
+- Python Enhancement Proposal: https://peps.python.org/pep-0680
+- CPython pull request: https://github.com/python/cpython/pull/31498
+
+## Converting Tomli to tomllib
+
+### Sync status
+
+`tomllib` in CPython commit https://github.com/python/cpython/commit/deaf509e8fc6e0363bd6f26d52ad42f976ec42f2
+matches Tomli commit https://github.com/hukkin/tomli/commit/7e563eed5286b5d46b8290a9f56a86d955b23a9a
+
+### Steps to convert
+
+- Move everything in `tomli:src/tomli` to `cpython:Lib/tomllib`. Exclude `py.typed`.
+
+- Remove `__version__ = ...` line from `cpython:Lib/tomllib/__init__.py`
+
+- Move everything in `tomli:tests` to `cpython:Lib/test/test_tomllib`. Exclude the following test data dirs recursively:
+
+  - `tomli:tests/data/invalid/_external/`
+  - `tomli:tests/data/valid/_external/`
+
+- Create `cpython:Lib/test/test_tomllib/__main__.py`:
+
+  ```python
+  import unittest
+
+  from . import load_tests
+
+
+  unittest.main()
+  ```
+
+- Add the following to `cpython:Lib/test/test_tomllib/__init__.py`:
+
+  ```python
+  import os
+  from test.support import load_package_tests
+
+
+  def load_tests(*args):
+      return load_package_tests(os.path.dirname(__file__), *args)
+  ```
+
+  Also change `import tomli as tomllib` to `import tomllib`.
+
+- In `cpython:Lib/tomllib/_parser.py` replace `__fp` with `fp` and `__s` with `s`. Add the `/` to `load` and `loads` function signatures.