Docs: changelog for Iron Horse 3.31.0

src/docs_templates/changelog.pt

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+3.31.0 Release
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+
+
+Not savegame compatible with Iron Horse releases before 3.27.0.
+
+
+*Changes*
+
+- reworked Roller Roof Hoppers
+    - improved appearance of Roller Roof Hoppers
+    - added more generation 4 and 5 Roller Roof Hopper variants
+    - added randomised Roller Roof Hoppers
+- reworked Covered Hoppers
+    - added more generation 4 and 5 Covered Hopper variants
+    - improved appearance of all Covered Hoppers
+- added randomised Covered Bulk Cargo Combo wagons
+- improved appearance of Farm Product Hoppers
+- improved appearance of MGR Hoppers
+- adjusted Mineral Covered Hopper sprites
+- adjust buy menu position for Swing Roof Hoppers
+
+
+*Fixes*
+
+- remove spurious '-' prefix company colour name suffix in buy menu
+
+
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 3.30.0 Release
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