dateTime formatStrings documentation

[mobb]

The list of suggested date formats has an entry which is so out-of-the-ordinary that it should be reconsidered. This is not a controlled list of formats, only examples. The example of "WWW" for 3-digit month has confused several users. This text copied from eml-attribute.xsd, dateTime/formatString documentation:

Non-standard   YYYY-WWW-DD            2002-OCT-14
Non-standard   YYYYWWWDD              2002OCT14

I cannot find any record of "WWW" (or "www") referring to a 3-letter month. It may have been intended to be MMM (which Java, and C++, and some database exports seem to recognize as a '3-character string for month'.

If someone has a reference for the "WWW", please add it to this issue. If not, I suggest we edit the documentation to

Non-standard   YYYY-MMM-DD            2002-OCT-14
Non-standard   YYYYMMMDD              2002OCT14

[mobb]

add to examples:
ISO with a time zone offset.

[mobb]

related (or maybe dupe of) #268

[mobb]

commit 1f5865a