Added support for keyword-only arguments on Python 3+ [rebase] (#411)
* Added support for keyword-only attributes. Closes #106, and closes #38
(Rebases #281)
Co-authored-by: Alex Ford <fordas@uw.edu>
* Add `attr.s`-level `kw_only` flag.
Add `kw_only` flag to `attr.s` decorator, indicating that all class
attributes should be keyword-only in __init__.
Minor updates to internal interface of `Attribute` to support
evolution of attributes to `kw_only` in class factory.
Expand examples with `attr.s` level kw_only.
* Add `kw_only` to type stubs.
* Update changelog for rebased PR.
Hear ye, hear ye. A duplicate PR is born.
* Tidy docs from review.
* Tidy code from review.
* Add explicit tests of PY2 kw_only SyntaxError behavior.
* Add `PythonToOldError`, raise for kw_only on PY2.
* `Attribute._evolve` to `Attribute._assoc`.
11 files changed
