Automatic merge of T1.5.1-368-g38888b34f and 10 pull requests

- Pull request #570 at de7a14f: Experimental glTF 2.0 support with PBR lighting
- Pull request #732 at 22f66dc: Improvements for air brakes
- Pull request #751 at 00981a2: Web interface to control cab controls with external hardware
- Pull request #799 at dc03850: Consolidated wind simulation
- Pull request #803 at 7157e08: Various adjustments to steam adhesion
- Pull request #813 at a23bd5c: Refactored garbage generators
- Pull request #814 at b102c1c: Bug fix for https://bugs.launchpad.net/or/+bug/2013969 Crash after uncoupling player loco of a train with EOT
- Pull request #815 at a5cc165: chore: Add GitHub automatic release notes configuration
- Pull request #816 at eae646d: Bug fix for https://bugs.launchpad.net/or/+bug/2014992 EOT can't be dismounted after train reversal
- Pull request #817 at 9c17435: weblink updated

Author: openrails-bot

Website/openrails.org/trade/index.php

@@ -37,7 +37,7 @@
   <li><a href="https://www.trainsimulations.net/">TrainSimulations</a> - Canada</li>
   <li><a href="https://pikku.msts.cz/">Pikku Locomotive Works</a> - Czechoslovakia</li>
   <li><a href="http://www.hsb-simulator.com/" title="Harz narrow-gauge railways">HSB Simulator</a> - Germany</li>
-  <li><a href="http://broadgaugeproduction.irts.in/">Broad Gauge Productions</a> - India</li>  
+  <li><a href="https://www.broadgaugeproductions.com/">Broad Gauge Productions</a> - India</li>
   <li><a href="http://www.gabriele90.com/">Gabriele 90</a> - Italy</li>
   <li><a href="http://www.3dtrains.com/" target="_blank">3DTrains</a> - USA</li>
   <li><a href="https://dekogames.com/trains/">Deko Games</a> - USA</li>