Added README for edition production notes.
Added initial sketch of preface page.
More work on preface layout.
Added initial edition artefacts using ConTeXt for typesetting and layout.
Corrected Paz's birth date.
Added in frontispiece page with portrait of Paz.
Added edition PDF output file for viewing.
Added makefile for building witn ConTeXt.
Further refinements.
Better control of varying layouts using proper ConTeXt technique.
Checkpoint.
Chmod invencion_tone_row_transforms.ly.
Removed obsolete prelimary sketch files.
Updated README to reflect use of ConTeXt.
Checkpoint.