proposed solution to #1568: percentage as attribute
util.error is deprecated
Added `length` function (#1542). Added scalar value handling for `extract` and `length` (#1576).
Merge branch 'next'
import multiple has a cascade effect. fixes #1497
Merge branch 'master' of https://github.com/cloudhead/less.js
Merge pull request #1572 from robocoder/patch-2

util.error is deprecated
Merge branch 'master' of https://github.com/seven-phases-max/less.js
Update changelog
Merge pull request #1570 from MSamman/Percent_As_Attribute

proposed solution to #1568: percentage as attribute
1.5.0 beta 4 release - last one I hope
Merge remote-tracking branch 'remotes/cloudhead-original/master'

Conflicts:
	dist/less-1.5.0-b4.js
	lib/less/parser.js
correct links in README