docs: Prepare version 0.4.0 release notes

Split the long release notes similar to NFD

Change-Id: If5ce5247bf74a4e402a33d92a35a686e7193dea1
diff --git a/docs/releases.rst b/docs/releases.rst
new file mode 100644
index 0000000..126e753
--- /dev/null
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+NLSR Versions
++++++++++++++
+
+.. toctree::
+   :hidden:
+   :maxdepth: 1
+
+   release-notes/release-notes-0.4.0
+   release-notes/release-notes-0.3.2
+   release-notes/release-notes-0.3.1
+   release-notes/release-notes-0.3.0
+   release-notes/release-notes-0.2.2
+   release-notes/release-notes-0.2.1
+   release-notes/release-notes-0.2.0
+   release-notes/release-notes-0.1.0
+
+* **NLSR version 0.4.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.4.0>`, `Documentation <https://named-data.net/doc/NLSR/0.4.0/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.4.0>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.4.0.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.4.0.tar.bz2.sha256>`__)
+
+* **NLSR version 0.3.2**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.2>`, `Documentation <https://named-data.net/doc/NLSR/0.3.2/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.3.2>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.3.2.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.3.2.tar.bz2.sha256>`__)
+
+* **NLSR version 0.3.1**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.1>`, `Documentation <https://named-data.net/doc/NLSR/0.3.1/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.3.1>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.3.1.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.3.1.tar.bz2.sha256>`__)
+
+* **NLSR version 0.3.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.3.0>`, `Documentation <https://named-data.net/doc/NLSR/0.3.0/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.3.0>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.3.0.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.3.0.tar.bz2.sha256>`__)
+
+* **NLSR version 0.2.2**
+  (:doc:`Release Notes <release-notes/release-notes-0.2.2>`, `Documentation <https://named-data.net/doc/NLSR/0.2.2/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.2.2>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.2.2.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.2.2.tar.bz2.sha256>`__)
+
+* **NLSR version 0.2.1**
+  (:doc:`Release Notes <release-notes/release-notes-0.2.1>`, `Documentation <https://named-data.net/doc/NLSR/0.2.1/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.2.1>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.2.1.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.2.1.tar.bz2.sha256>`__)
+
+* **NLSR version 0.2.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.2.0>`, `Documentation <https://named-data.net/doc/NLSR/0.2.0/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.2.0>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.2.0.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.2.0.tar.bz2.sha256>`__)
+
+* **NLSR version 0.1.0**
+  (:doc:`Release Notes <release-notes/release-notes-0.1.0>`, `Documentation <https://named-data.net/doc/NLSR/0.1.0/>`__)
+
+  `src (git) <https://github.com/named-data/NLSR/releases/tag/NLSR-0.1.0>`__,
+  `src (tarball) <https://named-data.net/downloads/nlsr-0.1.0.tar.bz2>`__ (`checksum <https://named-data.net/downloads/nlsr-0.1.0.tar.bz2.sha256>`__)