Added extensible prompt facility to io.sys and wrote a small unit test
Added extensible request and response for context managers
Applied some pep8 spaces which were lacking
changed request_prompts to prompt_responses
Use non-blocking get_nowait() instead of get(True) in _fill_results().
The _fill_results() does not need to block, as it will be called once
more after the main loop in run(), after all workers have finished.
Add changelog entry as per contribution guidelines.
GitHub Nose link
Merge pull request #886 from darsadow/bugfix/nose-link

GitHub Nose link
Remove mention of Github downloads, they're dead.
Merge branch '1.6'
Merge branch 'master' of github.com:fabric/fabric
Refactor some lcwd applications
Ensure we apply env.lcwd to templatedir & filename
Changelog re reopening of #328; fixes #328
Merge branch '1.6'

Conflicts:
	docs/changelog.rst
	fabric/operations.py
Reorganize/reword/expand the backgrounding FAQ
Merge branch '1.5' into 1.6
Merge branch '1.6'
add cross-references from env vars to CLI options
fix inconsistencies in env var to CLI crossrefs