20200920

• Added extra to building selection boxes and fixed offsets.
• Added a tech building which provides hitpoint regenerations. 🔧
• Added active scouting to AI balloons. 🎈
• Fixed Mining Towers tooltips.
• Reduced vehicle slowdown on snow and ice terrain. 🏔️
• Streamlined the tutorial mission to make it more beginner-friendly.
• Added pixelart artillery trails and unified the looks of all artillery projectiles.
• Improved AI Hacker Tank usage: it will prioritize neutral tech buildings and actively avoid unsafe routes.
• Added sounds for enabling and disabling the radar. 📺
• Fixed nuke ☢️ launch alert played for the wrong side.
• Added native macOS packaging support. 🍎