simplified/refined document model: collection of named nodes, without proper dependencies yet;
moved basic type definitions for ids and edits from Isar_Document to Document;
removed begin_document/end_document for now -- nodes emerge via edits;
edits refer to named nodes explicitly;
#!/bin/bash
ADMIN="$(cd "$(dirname "$0")"; cd "$(pwd -P)"; pwd)"
cd "$ADMIN"
hg churn --aliases user-aliases --progress