function normalizeSpace(str) {
						return utils.trim(str).replace(/\s+/g, ' ');
					}
Tries to find keyword for given direction, expressed in degrees
@param  {Number} dir Direction (degrees)
@param {Boolean} oldStyle Use old style keywords (e.g. "top" instead of "to bottom")
@return {String}     Keyword or <code>Ndeg</code> expression