Patch 4.1.2

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- 4.1.2 Changelog
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* Buildings
- Fixed the Dwarven Yale Pen being buildable close to a town hall.
- Fixed issue which caused guard tower range to be much larger than it was supposed to be, if the tower was already garrisoned before the upgrade to a guard tower.

* Characters
- The Mboytata unique wyrm is now a firewyrm.

* Maps
- Added Semi-Dry Grass and Dry Grass terrain features to the Earth map.

* Miscellaneous
- The error log in the stderr.txt file is no longer cleared when starting the game, being appended to instead. The file will be reset at start if it has grown beyond 1 MB.
- Fixed issue which caused the game to crash when quitting to the main menu from a mission.

* Sounds
- Fixed issue which caused the sound effects volume slider to have no effect on the actual volume.

* Terrain
- Added Semi-Dry Grass and Dry Grass terrain types.

* Units
- Added Firewyrm unit. Similar to the Wyrm, but it also deals fire damage, and possesses resistance to fire.
- Fixed the level up button being missing for the Dwarven Miner and Brising Miner.