Add helper for Editor processing

I've made no effort to make this work for people other than me,
and limited effort on that.

.gitignore

@@ -71,3 +71,7 @@ Session.vim
 *~
 
 *.pdf
+/tools/old-xeplist.xml
+/tools/xeps-email.conf
+/tmp/
+/pr-worktree/

tools/merge-helper.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+echo "Ensure you have ../xep-attic, then press enter"
+read
+echo "Generating pre-merge xeplist"
+make build/xeplist.xml
+cp build/xeplist.xml tools/old-xeplist.xml
+echo "Do your merges now and update the local checkout if you did that remotely (enter)"
+echo "(Follow https://github.com/xsf/xeps/blob/master/docs/PROCESSING.md )"
+read
+make build/xeplist.xml
+echo "Now archiving (enter)"
+read
+./tools/archive.py tools/old-xeplist.xml build/xeplist.xml
+pushd ../xep-attic
+git add content/xep-*
+git commit -a -m "Add latest changes"
+echo "Showing commit (enter)"
+read
+git show
+echo "If that looks good, push (enter)"
+read
+git push origin master
+popd
+echo "Now generate the docker image and upload it (enter)"
+read
+echo "Performing dry-run email using ./tools/xeps-email.conf (create if you don't have it) (enter)"
+read
+./tools/send-updates.py -c tools/xeps-email.conf --dry-run tools/old-xeplist.xml build/xeplist.xml standards@xmpp.org
+echo "Assuming that was right, running the real emails (enter)"
+read
+./tools/send-updates.py -c tools/xeps-email.conf tools/old-xeplist.xml build/xeplist.xml standards@xmpp.org