Textform

The big new feature for this release is order-independent Unfolding. This makes it possible to assemble records from all over the file into single rows.

The documentation for Fold and Unfold has also been improved with several detailed examples.

Fix several more bugs in the Fold and Unfold code:

* Isolate the Fold internal buffer from downstream modifications (like Drop)
* Handle ragged/incomplete records in Unfold

Fix a bug where the fixed (not folded) fields were not being copied.

Added support for reading and writing Markdown tables. An example is in the examples directory and can be demonstrated with

sh
python3 convert.py -i md -o csv < table.md | less


The reverse process can be used with `Write` to generate Markdown tables from another format. Note that formatting is preserved but may need quoting.