use latest sass and compass for testing
use latest middleman and compass for website
Ignore duplicate @import directives in Sass

Append Markdown for rendering only once per unique Sass source file.

Signed-off-by: Alex Coles <alex@alexbcoles.com>
added fixes from pull request into changelog
allow *.lsg and *.html.lsg files as source
fixed #90: error handling for undefined filters
make utf-8 work for ruby 1.9
Fix spelling of 'Tip' in README

[ci skip]

Signed-off-by: Alex Coles <alex@alexbcoles.com>
version update
cli: added output file to compile
cli: allow output to stdout
cli: read from stdin
cli: use stdin and stdout when no file names are given
refactored cli tests
simpler paths ins tests
check cli result within block
make sure tests clean up when failing
test stdout
root is not available in middleman
cli: added version information