Version 1.0.0

This is identical to 20200430

20200430 prerelease

This makes another set of incompatible changes: all the processor
module functions now get the same set of keyword options.

With luck this the next release will be a real one.

20200429 prerelease

Bug fix when fields but no processors were specified

20200427 prerelease

This is a big and incompatible set of changes:

- the script now lives in bin/csvf;
- there is a rudimentary module in lib/csvf.py which is the old script;
- the way processor module enter functions are called has changed;
- there is the skeleton of a Sphinx-based documentation generator.

The README.md is still the best source of documentation.

Last version even slightly compatible with the gist

After this the options to let it write anything other than CSV are
gone.

Context managers for processor modules

20200417 release

Processor modules

20200416 prerelease

Field editing, a lot of soup from the gist version

CSV writing support version

Final version which was a gist