add swr to options block of sfe (#16)

Author: skfogg

doc/mf6io/mf6ivar/dfn/gwe-sfe.dfn

@@ -286,6 +286,38 @@ tagged false
 longname file name of ABC information
 description defines a sensible heat flux (ABC) input file.  Records in the ABC file are used to calculate the flux of thermal energy in or out of a stream reach resulting from sensible heat exchange.
 
+block options
+name swr_filerecord
+type record swr6 filein swr6_filename
+shape
+reader urword
+tagged true
+optional true
+longname
+description
+
+block options
+name swr6
+type keyword
+shape
+in_record true
+reader urword
+tagged true
+optional false
+longname swr keyword
+description keyword to specify that record corresponds to the shortwave radiation (SWR) file.  The behavior of the SWR utility and a description of the input file is provided separately.
+
+block options
+name swr6_filename
+type string
+preserve_case true
+in_record true
+reader urword
+optional false
+tagged false
+longname file name of SWR information
+description defines a shortwave radiation (SWR) input file.  Records in the SWR file are used to calculate the flux of thermal energy in or out of a stream reach resulting from shortwave radiation heat flux.
+
 # --------------------- gwe sfe packagedata ---------------------
 
 block packagedata