From 309a8d813bf4f94a26e3cd2428dc226192ca00b0 Mon Sep 17 00:00:00 2001
From: Dimitri Staessens <dimitri@ouroboros.rocks>
Date: Thu, 21 Sep 2023 10:08:52 +0200
Subject: docs: Add 0.20 release note

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 content/en/docs/Releases/0_20.md | 62 ++++++++++++++++++++++++++++++++++++++++
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 create mode 100644 content/en/docs/Releases/0_20.md

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diff --git a/content/en/docs/Releases/0_20.md b/content/en/docs/Releases/0_20.md
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+---
+date: 2023-09-21
+title: "Ouroboros 0.20"
+linkTitle: "Ouroboros 0.20"
+description: "Major additions and changes in 0.20.0"
+author: Dimitri Staessens
+---
+
+Version 0.20 brings some code refactoring and a slow of bugfixes to
+the prototype to improve stability, but the main quality-of-life
+addition is config file support in TOML format. This removes the need
+for bash scripts to configure the prototype on reboots/restarts; a
+very basic feature that was long overdue.
+
+As an example, before v0.20, this server had Ouroboros running as a
+systemd service, and it was configured using the following irm commands:
+
+```bash
+irm i b t udp n udp l udp ip 51.38.114.133
+irm n r ouroboros.rocks.oping l udp
+irm b prog oping n ouroboros.rocks.oping auto -- -l
+```
+
+These bootstrap a UDP layer to the server's public IP address,
+register the name "ouroboros.rocks.oping" with that layer and bind the
+program binary /usr/bin/oping to that name, telling the irmd to start
+that server automatically if it wasn't running before.
+
+While pretty simple to perform, if the service was restarted or the
+server was rebooted, we needed to re-run these commands (we could have
+added them to some system startup script, of course).
+
+Now the IRMd will load the config file specified in
+/etc/ouroboros/irmd.conf. The IRMd configuration to achieve the above
+(I renamed the UDP layer to "Internet", but that name doesn't really
+matter if there is only one ipcpd-udp in the system):
+```bash
+root@vps646159:~# cat /etc/ouroboros/irmd.conf
+### Ouroboros configuration file
+[name."ouroboros.rocks.oping"]
+prog=["/usr/bin/oping"]
+args=["-l"]
+
+[udp.internet]
+bootstrap="Internet"
+ip="51.38.114.133"
+reg=["ouroboros.rocks.oping"]
+```
+
+To enable config file support, tomlc99 is needed. Install via
+
+```bash
+git clone https://github.com/cktan/tomlc99
+cd tomlc99
+make
+sudo make install
+```
+
+and then reconfigure cmake and build Ouroboros as usual.
+
+
+
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