stylecow plugin extend

Stylecow plugin to work with @extend using the syntax proposed by Tab Atkins.

%button {
	display: inline-block;
	padding: 1em;
}

%big-button {
	@extend %button;
	font-size: 2em;
}

%red-big-button {
	@extend %big-button;
	color: red;
}

.button {
	@extend %button;
}

.big-button {
	@extend %big-button;
}

.red-big-button {
	@extend %red-big-button;
}

.red-big-button-rounded {
	@extend %red-big-button;
	border-radius: 8px;
}

And stylecow converts to:

.red-big-button, .red-big-button-rounded, .big-button, .button {
	display: inline-block;
	padding: 1em;
}
.red-big-button, .red-big-button-rounded, .big-button {
	font-size: 2em;
}
.red-big-button, .red-big-button-rounded {
	color: red;
}
.red-big-button-rounded {
	border-radius: 8px;
}

More demos in the tests folder