Consider omitting attribute components

[csarven]

Consider omitting attribute components that have quality issues in the data. For example, an attribute value in the data might use a text description of a code instead of a its identifier:

whereas it should be like:

Or there is simply a mismatch between the data and metadata.

These issues are better fixed at the source (and I'm reporting them), however, for the time being it might be better to provide a way to omit them in the results. Obviously precision will be lost but probably better than leaving inaccurate information.

Possible approaches (ordered from easiest to difficult):

• Offer a config option to omit attributes with a certain @conceptRef
• Leave everything as is in KeyFamily, but omit the values that have whitespaces (note: is this safe in general for attributes?) in GenericData
• Omit the component in KeyFamily and the value in GenericData.

Kids, don't manipulate other people's data without parental guidance.

[csarven]

Commit ef300d3 offers a config to omit certain attributes. Leaving this issue open for feedback.