Some changes to consider

[jamesaoverton]

Here are some changes to LDTab format that we're considering making, and some brief notes on our thinking. The changes I'm more certain about are at the top -- less certain at the bottom:

• change "retraction" to boolean: currently it's "0" or "1" which I find confusing
• change "retraction" to "retracted": better match for a boolean value
• use JSON arrays for RDF lists: this is closer to Turtle and more concise, implementation here https://github.com/ontodev/ldtab.clj/tree/rdf-lists
• rename "assertion" to "transaction": a better name, but "transaction" is a SQL keyword
• rename keywords in "datatype" column: I'm just unhappy with '_IRI' etc. -- I don't like the underscores. Should they be CURIEs? No, they're keywords. Drop the underscore? We want them to be visually distinct from CURIEs and language tags.
• rename "annotation" column to "meta": the column is used for both RDF reifications and OWL annotations, so "annotation" might be misleading; on the other hand, we might be overloading the meaning of "meta", using it three different ways in LDTab