    CHANGES IN Evapotranspiration VERSION 1.11

NEW FEATURES
    o  ReadInputs - now enabling processing only the user-specified climate variables.
    o  ReadInputs - now enabling processing data of vapour pressure and saturated vapoure pressure ('va' and 'vs').
    o  ET - vapour pressure and saturated vapoure pressure can be used instead of RH for formulations requiring RH data.
   
SIGNIFICANT USER-VISIBLE CHANGES
    o  ReadInputs - additional argument 'varnames' used to specify the names of climate variables to be processed. Please see the manual of ReadInputs() for details. 
    o  ReadInputs - changed column names for raw data - no extension of .daily or .subdaily is required now

BUG FIXES
    o  ReadInputs - Fixed bugs several bugs in aggregating and error checking 
    o  ET.MortonCRWE - Fixed bugs when estimating with solar radiation data 

MINOR CHANGES
    o  add units in ET. formulation manuals
    o  ET.Hamon - updated the manual to specify that climate input of n (sunshine hours) is required.
    
DEPRECATED & DEFUNCT
    o  NA