Docs and changelog for TypedDict tracing.

CHANGES.rst

@@ -4,6 +4,11 @@ Changelog
 master
 ------
 
+* Trace per-key value types for dictionaries (up to a configured max size) and
+  if the traced types are consistent, output a TypedDict in the stub instead of
+  a homogenous dict. Thanks Pradeep Kumar Srinivasan. Merge of #143, fixes
+  #105.
+
 * Fix crash with empty tuples. Thanks akayunov for the report, Christophe
   Simonis for the simplest-case repro. Fixes #136.
 

doc/configuration.rst

@@ -107,6 +107,15 @@ Subclassing ``Config`` or ``DefaultConfig``
     .. _context manager: https://docs.python.org/3/reference/datamodel.html#with-statement-context-managers
     .. _contextlib.contextmanager: https://docs.python.org/3/library/contextlib.html#contextlib.contextmanager
 
+ .. method:: max_typed_dict_size() -> int
+
+   The maximum size of string-keyed dictionary for which per-key value types
+   will be stored, and (if the traced keys and value types are consistent), a
+   `TypedDict` will be emitted instead of `Dict`. Return `0` to disable per-key
+   type tracking and TypedDict generation.
+
+   Defaults to 10.
+
 .. class:: DefaultConfig()
 
   ``DefaultConfig`` is the config MonkeyType uses if you don't provide your own;