Validate() should be run as part of write_table()

[matentzn]

It will cause a lot of errors at first, but overall, it will lead to better mapping data. The suggestion is that whenever we call write_table(), the final part of all sssom generating CLI methods, we should run the validator to make sure we only ever output legal sssom.

[cmungall]

I suggest parameterizing and allowing overrides, it may be necessary to occasionally write something incorrect in order to repair it.

[matentzn]

Maybe this is not a good idea after all. Closing.