Add blog post on matrix bridges

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

docs/blog/posts/changelog/update-bridged-discord-to-matrix-and-slack.md

@@ -0,0 +1,33 @@
+---
+date: 2023-02-24
+categories:
+  - CHANGELOG
+tags:
+  - matrix
+links:
+  - Matrix Community: community/matrix.md
+  - Slack Community: community/slack.md
+description: Not into Discord? Now we're bridged to Matrix and Slack!
+title: Our Discord server is now bridged to Matrix and Slack
+image: /images/bridge-ception.png
+---
+
+# Not into Discord? Now we're bridged to Matrix and Slack!
+
+Ever since dabbling in the "fediverse" with [Mastodon][review/mastodon], I've been thinking about how to archive (*"liberate"*) our community chat history from Discord, so that it's preserved in the event of a Discord "space-karen" event...
+
+<!-- more -->
+
+While Matrix is a powerful, open-source, federated group-chat protocol, its secret sauce is its ability bridge multiple isolated platforms together, so as to ensure cross-platform communication. For example, Matrix can bridge Discord and Slack, such that the same messages can appear in Discord, Matrix, **and** Slack:
+
+![Screenshot of bridge-ception]({{ page.meta.image }}){ loading=lazy }
+
+I'm planning a recipe re the (*complex*) implementation of a Matrix instance (*and associated bridges*) on Kubernetes, but in the interim, we now have:
+
+* A community [Discord server][community/discord], bridged with...
+* A communtiy [Matrix server][community/matrix], bridged with...
+* A community [Slack server][community/slack]
+
+Jump in and join the fun! :grin:
+
+--8<-- "common-links.md"