Extract attributes and their values from attribute set:
<code>[attr col=3 title="Quoted string"]</code>
@param {String} attrSet
@returns {Array}
function extractAttributes(attrSet, attrs) {
		attrSet = require('utils').trim(attrSet);
		var result = [];
		
		/** @type StringStream */
		var stream = require('stringStream').create(attrSet);
		stream.eatSpace();
		
		while (!stream.eol()) {
			stream.start = stream.pos;
			if (stream.eatWhile(reWord)) {
				var attrName = stream.current();
				var attrValue = '';
				if (stream.peek() == '=') {
					stream.next();
					stream.start = stream.pos;
					var quote = stream.peek();
					
					if (quote == '"' || quote == "'") {
						stream.next();
						if (consumeQuotedValue(stream, quote)) {
							attrValue = stream.current();
							// strip quotes
							attrValue = attrValue.substring(1, attrValue.length - 1);
						} else {
							throw 'Invalid attribute value';
						}
					} else if (stream.eatWhile(/[^\s\]]/)) {
						attrValue = stream.current();
					} else {
						throw 'Invalid attribute value';
					}
				}
				
				result.push({
					name: attrName, 
					value: attrValue
				});
				stream.eatSpace();
			} else {
				break;
			}
		}
		
		return result;
	}