Merge branch 'release/0.8' into stable
Spelling correction
remove unicode indicator in python2 unicode string
Added LESS_PATH option
Use Environment.directory as reference for absolute paths
Document relative paths
Use env.resolver instead
Update CHANGES.
Regenerate AUTHORS.
Set new version number.
Update upgrade instructions.
Merge branch 'release/0.9' into stable
Merge branch 'release/0.9'
Set version number to indicate dev version.
Merge pull request #266 from noirbizarre/less-include-path

Added LESS_PATHS option
Merge pull request #265 from uchida/python2-unicode-in-compass-config

remove unicode indicator in python2 unicode string
Merge pull request #264 from Mause/patch-1

Spelling correction
Cleancss as an input filter to fix import inlining

cleancss is the only webassets filter(AFAIK) that supports CSS import inlining. But to do that it needs to know the directory path of the CSS file it's working on, which is only accessible to input filters.

We provide an input function that passes the --root argument to cleancss to fix this issue.

We keep the output filter as an added bonus to remove new lines between files processed this way.
Support files lists or tuples in Jinja2 assets block.

E.g.: `{% assets 'f1', ('f2', 'f3'), ['f4'] %}`
renders like `{% assets 'f1', 'f2', 'f3', 'f4' %}`.

It helps assets composition, enabling something like *varargs
(not supported by Jinja2).
Fix cssrewrite filter dealing with hostnames.