v0.7.0

Two designs per gate type, opening direction, 11 languages. Details: gate_style option with real-world designs (sliding: horizontal aluminium slats or vertical bars; swing: bell-top chapeau de gendarme or concave), slide_direction option for sliding gates (left or right), UI translated into EN/FR/DE/ES/IT/NL/PT/SV/NO/DA/PL, updated screenshots. Existing configs keep working: default style is the new modern design; set gate_style: classic to keep the previous illustrations.