Update to tools/Drawings

Hi,

 I Feel like a update to the tools/Drawings would be a great addition, ie,
the Fibonacci Retracement add colored zones,
Equidlisfant Price Channel add a middle line with some transparent color for the zone you create,
the line and trend drawing tools, add a snap-to trend line where when you click on a point on the chart it places a straight line from that point forward,
 Adding text to the middle of the trendline to identify the purpose you have it there.
 

These are few of the additions i would love to see in upcoming updates