First implementation (#1)

Reviewed-on: infra/paperspec#1

fixtures/src/README.md

@@ -1,6 +1,11 @@
 # Fixture sources
 
+<<<<<<< HEAD
 Each source describes a document as a converter first read it, mistakes included, in a shorthand that `paperspec build` expands.
+||||||| parent of 4fa326d (First implementation (#1))
+=======
+Each source describes a document as a converter first read it, mistakes included, in a shorthand that `tools/build.py` expands.
+>>>>>>> 4fa326d (First implementation (#1))
 The build mints IDs, applies the listed corrections, lays out synthetic geometry, signs the listed receipts and writes the package.
 The shorthand is tooling, not a format.