Made some significant improvements

Fixed up the clock hands to center correctly. Changed clock hand color to be set by masking, allowing for any color to be used. Added access properties for many clock attributes via inspector. 24hour clock face added. User can set HourCount to 24 in the inspector to use the clock with 0-23 around the perimeter, Otherwise in 24 hour mode, with hourCount=12 you will see a 1-12 clock with 13-24 in the inner circle.