Merge branch 'release/0.8'
Set version number to 0.9.dev.
Add fabfile script to publish docs.
Add ASSETS_ prefix to load_path, url_mapping.
Include a ready-made STATICFILE_FINDERS example.
Fix typo in documentation.
Fixed typo

Replaced 'statc' with 'static'
Docs: webassets core now longer has the gzip filter.
Added EXTRA to assets tag render context, similar to Jinja2
Merge pull request #22 from freshlimestudio/master

Added EXTRA to assets tag render context, similar to Jinja2
Fix race condition during assets.py collection.

Close #12.
Fix lockup from 08407c4. Close #23.
Fixed a little typo on README.rst

Fixed a little typo on README.rst
Merge pull request #26 from alepane21/patch-1

Fixed a little typo on README.rst
Python 3.3 fixes.
Python 3.3 fix for management command.
Fix the case when Django template actually uses booleans

using `debug=settings.DEBUG` in the asset definition in template actually uses a boolean, which fails to convert to lower case.
Merge pull request #28 from rassie/patch-2

Fix the case when Django template actually uses booleans
Ensure errors from build script are raised

The webassets script will return a numeric error value in certain
failure cases (such as FilterErrors raised by some filters) instead of
raising an exception. Since run_with_argv is called directly here, we
need to check its return value and raise a Django CommandError if the
build command indicated a failure.
"Merge pull request #29 from wyattanderson/master\n\nEnsure errors from build script are raised"