add missing files

cropswap-members@shandan.one/banner.html

@@ -0,0 +1 @@
+<p><div id="cropswap-members-banner" style="position:sticky;top:0;background-color:#cc0;color:#000;width:100%;text-align:center;padding:0.5em;box-sizing:border-box;"><span>To unsubscribe, click <a href="mailto:cropswap-members@shandan.one?subject=[UNSUBSCRIBE]">here</a> or send an email to <a href="mailto:cropswap-members@shandan.one">cropswap-members@shandan.one</a>, with [UNSUBSCRIBE] as the subject (square brackets included).</span></div>

cropswap-members@shandan.one/banner.txt

@@ -0,0 +1 @@
+To unsubscribe, send an email to cropswap-members@shandan.one, with [UNSUBSCRIBE] as the subject (square brackets included).

cropswap@shandan.one/banner.html

@@ -0,0 +1 @@
+<p><div id="cropswap-banner" style="position:sticky;top:0;background-color:#cc0;color:#000;width:100%;text-align:center;padding:0.5em;box-sizing:border-box;"><span>To unsubscribe, click <a href="mailto:cropswap@shandan.one?subject=[UNSUBSCRIBE]">here</a> or send an email to <a href="mailto:cropswap@shandan.one">cropswap@shandan.one</a>, with [UNSUBSCRIBE] as the subject (square brackets included).</span></div>

cropswap@shandan.one/banner.txt

@@ -0,0 +1 @@
+To unsubscribe, send an email to cropswap@shandan.one, with [UNSUBSCRIBE] as the subject (square brackets included).

gdbm-iter.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+# depends (debian) python3-gdbm
+import dbm
+import sys
+list = sys.argv[1]
+
+def gdbm_iter_keys(dbpath):
+    with dbm.open(dbpath, 'r') as db:
+        k = db.firstkey()
+        while k is not None:
+            yield k, db.get(k)
+            k = db.nextkey(k)
+
+members = filter(lambda x: x[1], gdbm_iter_keys(list))
+
+for k, v in dict(members).items():
+    print(k.decode('utf-8'))
+    print(v.decode('utf-8'))
+