Add list of not decoded metar elements

[flyewi]

Hi,
currently a list of unknown elements exists only for remarks.
Can you add this also for the main metar part.
This would enable me to decode non standard elements also.
example:
MDSD 221800Z 00000KT 8000 -TSRA FEW014CB BKN016 SCT070 BKN300 27/26 Q1015 CB/NE/E/S/SW/W