Revert adding "transparent" as a color name

Adding "dpi" as a valid dimensions for media queries

Added 'transparent' as a named color

Fix for unnamed parameters test fail & failing test for import-once

fixed issue #795

Implemented named arguments

'''
.foo {
.bar & {
&:hover {
color: orange;
}
}
}
'''

now outputs

'''
.bar ...

example:

@n: 1;
~".span@{n}" { ... }

mocha found a couple global variable leaks. Here's the fix.

.mixin (...) {} // matches any number of arguments
.mixin () {} // matches exactly ...

Add --strict-imports option to disable for perf
reasons.

`.mixin` & `.mixin()` had differing behaviours.

Conflicts:
test/css/media.css
test/less/media.less

Add @media bubbling/nesting/merging

Fixed spelling error on benchmark/less-benchmark.js

Make parse error handler more robust

Fix callback called two times

Fixes #602

This is necessary to get useful error messages in cases where root has not been constructed suc...

newline all selectors whose combined length is greater than 25 chars

CommonJS/AMD module support

Improve Windows path support in lessc

Fix for issue #466

ex: `.mixin(4) !important;`

is-string, is-keyword, is-color, is-number

- add a LessError class
- add an expect() function
- add an error() function