Sphinx-autodoc-typehints

- Fixed escape characters in parameter default values getting lost during signature processing
- Replaced use of the `config-inited` event (which inadvertently required Sphinx 1.8) with the `builder-inited` event

- The setting of the `typing.TYPECHECKING` flag is now configurable using the `set_type_checking_flag` option

- The extension now sets `typing.TYPECHECKING` to `True` during setup to include conditional imports which may be used
in type annotations
- Fixed parameters with trailing underscores (PR by Daniel Knell)
- Fixed KeyError with private methods (PR by Benito Palacios Sánchez)
- Fixed deprecation warning about the use of formatargspec (PR by Y. Somda)
- The minimum Sphinx version is now v1.7.0

- Fixed rendering of generic types outside the typing module (thanks to Tim Poterba for the PR)

- Fixed crash when processing docstrings from nested classes (thanks to dilyanpalauzov for the fix)
- Added support for Python 3.7
- Dropped support for Python 3.5.0 and 3.5.1

- Ensured that `:rtype:` doesn\'t get joined with a paragraph of text (thanks to Bruce Merry for the PR)