Added title_spacing trait to axis to specify distance of the axis title from the axis line
Added title_spacing trait to axis to specify distance of the axis title from the axis line

ContinuumIO/chaco,burnpanck/chaco,tommy-u/chaco,ContinuumIO/chaco,tommy-u/chaco,burnpanck/chaco,tommy-u/chaco,ContinuumIO/chaco,ContinuumIO/chaco,burnpanck/chaco