CHANGES IN Evapotranspiration VERSION 1.16

NEW FEATURES
    o  NA
   
SIGNIFICANT USER-VISIBLE CHANGES
    o  NA

BUG FIXES
    o  Fixed bug in the 'ET.PenmanMonteith' function that require 'wind' argument for wind = 'no'.
    o  Fixed bug in the 'Radiation' function that require 'Tdew' argument for Tdew = F.

MINOR CHANGES
    o  Updated the manual of 'constants' - added recommended values for fz, b1 and b2 to be used in Morton's model.
    Corrected typo in the 'Radiation' function: 'solar dedication' -> 'solar declination'.

DEPRECATED & DEFUNCT
    o  NA