It should raise TypeError when kwargs is not a dict.

* Document STARTUPINFO constructor
* Move versionchanged directive to above of attributes

Windows uses backslashes for separators.

Moved explicit raise from inside try to try...else.

Discussed at https://github.com/python/core-workflow/issues/32.

reported by Alexis Lopez-Garcia.

Mention that an ImportError is raised when exec_module() is defined, but
create_module() is not.

Patch by Aviv Palivoda.

Patch by Aviv Palivoda.

Add a reference to create_module(), in the first versionadded of section Loaders.

follow up of GH-162

Patch by Matthias Bussonnier.

* Fix small typos in introduction and datastructures
* Use iterable instead of L in the doc for list.extend

The Windows-specific subprocess.STARTUPINFO class now accepts
keyword-only arguments to its constructor to set the various
data attributes.

Patch by Subhendu Ghosh.

* bpo-16285: Update urllib quoting to RFC 3986

urllib.parse.quote is now based on RFC 3986, and hence
includes `'~'` in the set of characters that is not escaped
by default.

Patch by Christian Theune and Ratnadeep Debnath.

When checking for the default X web browser, xdg-settings
may emit messages on stderr if some components (such as
kreadconfig5) are unavailable. These messages aren't of
interest to Python, so we just ignore them.

- Add 'preferred' argument to webbrowser.register
- Use xdg-settings to specify preferred X browser

The first change replaces the existing undocumented tri-state
'try_order' parameter with the documented boolean keyword-only
'preferred' parameter. Setting it to True places the browser at the
front of the list, preferring it as the return to a subsequent get() call.

The second change adds a private `_os_preferred_browser` setting
and then uses that to make the default browser reported by
`xdg-settings` first in the try list when running under X (or
another environment that sets the `DISPLAY` variable).
This avoids the problem where the first entry in the tryorder
queue otherwise defaults to xdg-open, which doesn't support
the "new window" option.