re-use initializer to speed up tests
Revert "restrict deps on DF, hxt, and HandsomeSoup"

This reverts commit f9bc1b9d3714bb6935f4ea2fe9ea689ba18d9aa5.
Revert "missing change for old digestive functors api"

This reverts commit 289ec8bcc0dae364249d200bde875ab375e7ac76.
allow snap version to 1.0.*; restrict deps on DF, hxt, and HandsomeSoup
Require snap (>=) 1.0; helpful Makefile.
Begin testing library.
depend on released versions of snap, not unreleased 1.0