GODRIVER-2121 Add BSON binary subtypes 6 and 7 (#768)

Author: benjirewis

bson/bsontype/bsontype.go

@@ -38,6 +38,8 @@ const (
 	BinaryUUIDOld     byte = 0x03
 	BinaryUUID        byte = 0x04
 	BinaryMD5         byte = 0x05
+	BinaryEncrypted   byte = 0x06
+	BinaryColumn      byte = 0x07
 	BinaryUserDefined byte = 0x80
 )
 

data/bson-corpus/binary.json

@@ -50,6 +50,11 @@
             "canonical_bson": "1D000000057800100000000573FFD26444B34C6990E8E7D1DFC035D400",
             "canonical_extjson": "{\"x\" : { \"$binary\" : {\"base64\" : \"c//SZESzTGmQ6OfR38A11A==\", \"subType\" : \"05\"}}}"
         },
+        {
+            "description": "subtype 0x07",
+            "canonical_bson": "1D000000057800100000000773FFD26444B34C6990E8E7D1DFC035D400",
+            "canonical_extjson": "{\"x\" : { \"$binary\" : {\"base64\" : \"c//SZESzTGmQ6OfR38A11A==\", \"subType\" : \"07\"}}}"
+        },
         {
             "description": "subtype 0x80",
             "canonical_bson": "0F0000000578000200000080FFFF00",