Offical release stable version

Note:Keep both units the same version

Change log vs V1.72_build002(Release):

1.Rotary encoder driver has been optimized to be smoother and more accurate (no lost steps).

2.Total RF GAIN = 1/4 RF GAIN setting when AGC is off to prevent sudden volume increase.

3.Rx volume stepping has been optimized.

4.MIC GAIN has been lowered to avoid picking up too much background noise.