Add support for Python 3.8 in typing_extensions (#647)
Fixes https://github.com/python/typing/issues/643
(Use ignore whitespace option to review this, since it mostly just indents a bunch of stuff.)
PR summary:
* Update Travis config to run on a bunch of newer Python versions (including 3.8-dev).
* Only run `typing` tests on Python 3.6 or older, starting from Python 3.7 development of `typing` moved to CPython repo, where it was significantly reworked. We still run `typing_extension` tests on all versions.
* Update `repr()` tests in `typing_extensions` to conditionally expect correct module name.
* Add `TypedDict` to `__all__`.
* Use `Final`, `Literal`, etc. from `typing` if those are available (as we do for other things).
* Rename `@runtime` to `@runtime_checkable` in `typing_extensions` (I think we can keep `@runtime` in `typing_extensions` as an alias for backwards compatibility).
Note this only updates Python 3 version of `typing_extensions`. There will be a corresponding update for the Python 2 version of `typing_extensions` as part of https://github.com/python/typing/issues/648
3 files changed
