Add: 13.0-beta1 announcement (#238)

_posts/2022-10-31-openttd-13-0-beta1.md

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+---
+title: OpenTTD 13.0-beta1
+author: michi_cc
+---
+
+Are you spooked?
+We are too with this spooky release date, even if nothing in OpenTTD itself is spooky.
+
+Luckily, I can offer you the first testing release of the 13.X release series.
+We collected whatever we could find on the cutting room floor to get you a Halloween release.
+
+Some of the higlights of this release include:
+* Build NewGRF objects over an era with click-and-drag.
+* Wider rivers on map generation.
+* Improved handling of HiDPI and mixed-DPI screens.
+* Some more GUI improvements like a cleaned up finance window.
+* Many bug-fixes (over 50 of them), tweaks, changes, and other additions.
+
+(As ever, see the changelog for further details).
+
+The usual titlegame competition has been [announced on the forums](https://www.tt-forums.net/viewtopic.php?t=90357).
+See the page for the exact competition rules if you are interesed.
+
+* [Download](https://www.openttd.org/downloads/openttd-releases/testing.html)
+* [Changelog](https://cdn.openttd.org/openttd-releases/13.0-beta1/changelog.txt)
+* [Bug tracker](https://github.com/OpenTTD/OpenTTD/issues)