Duplicate languages `izi` and `xsm` in AA raw data about dev HOT 4 CLOSED

Similar problem with LanguageCode xsm:

• Lines 4182-4222 have LanguageName "kasem"
• Lines 4224-4268 have LanguageName "kasɩm"

from dev.

The first problem is handled by "recent" changes to ISO 639-3, which retires [izi] and splits it into 4 separate codes:

http://www-01.sil.org/iso639-3/documentation.asp?id=izi

I've updated the AA data file. The second issue is that Kasem and Kasim are slightly reportedly mutually intelligible varieties of the same language, but one is spoken in Burkina and the other in Ghana. Ethnologue lists the Burkina variety as canonical:

http://www.ethnologue.com/language/xsm

The inventories are slightly different too. Do we want to implement implicit trump order as: the first occurrence of an ISO code within a particular inventories file?

from dev.

arbitrarily choosing the first one will certainly be easier to implement than trying to add an extra trump indicator somehow. Probably fine for AA since it's a static resource and we can fix the order the way we want it. Less good for handling resources like SAPHON where we don't have control over the format of the raw data file, so we can't guarantee that the "canonical" form (according to Ethnologue or whoever) comes first in the list.

from dev.

I think we can close this issue, or? Trump ordering will be handled internally by first come-first serve in alphabetic order. Other users can define trump as they fit. We will also pull in Glottolog codes (todo).

from dev.