Trio-click

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(bugfix release, released on September 8th 2014)

- Fixed an issue with error reporting on Python 3 for invalid forwarding
of commands.

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(bugfix release, released on August 22nd 2014)

- Added missing ``err`` parameter forwarding to the ``secho`` function.
- Fixed default parameters not being handled properly by the context
invoke method. This is a backwards incompatible change if the function
was used improperly. See :ref:`upgrade-to-3.2` for more information.
- Removed the `invoked_subcommands` attribute largely. It is not possible
to provide it to work error free due to how the parsing works so this
API has been deprecated. See :ref:`upgrade-to-3.2` for more information.
- Restored the functionality of `invoked_subcommand` which was broken as
a regression in 3.1.

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(bugfix release, released on August 13th 2014)

- Fixed a regression that caused contexts of subcommands to be
created before the parent command was invoked which was a
regression from earlier Click versions.

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(codename "clonk clonk", released on August 12th 2014)

- formatter now no longer attempts to accomodate for terminals
smaller than 50 characters. If that happens it just assumes
a minimal width.
- added a way to not swallow exceptions in the test system.
- added better support for colors with pagers and ways to
override the autodetection.
- the CLI runner's result object now has a traceback attached.
- improved automatic short help detection to work better with
dots that do not terminate sentences.
- when definining options without actual valid option strings
now, Click will give an error message instead of silently
passing. This should catch situations where users wanted to
created arguments instead of options.
- Restructured Click internally to support vendoring.
- Added support for multi command chaining.
- Added support for defaults on options with ``multiple`` and
options and arguments with ``nargs != 1``.
- label passed to ``progressbar`` is no longer rendered with
whitespace stripped.
- added a way to disable the standalone mode of the ``main``
method on a Click command to be able to handle errors better.
- added support for returning values from command callbacks.
- added simplifications for printing to stderr from ``echo``.
- added result callbacks for groups.
- entering a context multiple times defers the cleanup until
the last exit occurs.
- added ``open_file``.

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(bugfix release, released on August 11th 2014)

- Fixed an issue where the wrapped streams on Python 3 would be reporting
incorrect values for seekable.

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(bugfix release, released on July 28th 2014)

- Fixed a bug with text wrapping on Python 3.