Fixed text wrapping on 3.x.  This fixes #196
Merge branch '2.x-maintenance'
Changed behavior of unpack_args to what is documented.
Added vendoring support to click.
This is actually 2.5-dev
Merge branch '2.x-maintenance'
This is 2.5
this is 2.6-dev
Fixed an issue with stream wrapping on python 3
Merge branch '2.x-maintenance'
Added subcommand chaining.
Added support for multiple defaults on options and nargs
This is 2.6
Merge branch '2.x-maintenance'
No more whitespace stripping to progressbar label.  This fixes #186
Added a way to disable the standalone mode on main.
Added exception docs
Added termui tests
Added support for return values from command callbacks.
Added printing to stderr to echo