Stub out SSU2 spec, point to proposal, add to doc index

i2p2www/pages/site/docs/index.html

@@ -1,7 +1,7 @@
 {% extends "global/layout.html" %}
 {% block title %}{% trans %}Index to Technical Documentation{% endtrans %}{% endblock %}
-{% block lastupdated %}2022-04{% endblock %}
-{% block accuratefor %}0.9.53{% endblock %}
+{% block lastupdated %}2022-08{% endblock %}
+{% block accuratefor %}0.9.55{% endblock %}
 {% block content %}
 <p>{% trans -%}
 Following is an index to the technical documentation for I2P.
@@ -180,6 +180,8 @@ Traditionally used only by Java applications and higher-level APIs.
 </li><li>
 <a href="{{ spec_url('ssu') }}">{{ _('SSU specification') }}</a>
 </li><li>
+<a href="{{ spec_url('ssu2') }}">{{ _('SSU2 specification') }}</a>
+</li><li>
 <a href="{{ site_url('docs/how/cryptography') }}#tcp">{{ _('NTCP transport encryption') }}</a>
 </li><li>
 <a href="{{ site_url('docs/how/cryptography') }}#udp">{{ _('SSU transport encryption') }}</a>

i2p2www/spec/ssu2.rst

@@ -0,0 +1,25 @@
+======
+SSU2
+======
+.. meta::
+    :category: Transports
+    :lastupdated: 2022-08
+    :accuratefor: 0.9.55
+
+.. contents::
+
+
+
+Status
+========
+
+Development and testing in progress. See [Prop159]_.
+
+
+
+
+References
+==========
+
+.. [Prop159]
+    {{ proposal_url('159') }}