Id list

[myourshaw]

from the VCF spec: "ID - identifier: Semi-colon separated list of unique identifiers where available. If this is a dbSNP variant it is encouraged to use the rs number(s). No identifier should be present in more than one data record. If there is no identifier available, then the missing value should be used. (String, no white-space or semi-colons permitted)"

[martijnvermaat]

Thanks for the patch @myourshaw! I agree, but this will break quite some existing code.

Perhaps we should adding some tags to this and similar proposals, to make it easier to include them all in a future backwards compatibility breaking version...