railway: add dashed casing for narrow_gauge railways

railway.json

@@ -7,6 +7,12 @@
     },
     "minZoom": 11,
     "feature": {
+        "style:casing": {
+            "weight": "{% if tags.service == 'yard' or tags.service == 'siding' or tags.service == 'spur' or tags.service == 'crossover' %}5{% else %}{% if tags.railway == 'rail' %}{% if tags.usage == 'main' or tags.usage == 'branch' %}7{% else %}6{% endif %}{% elseif tags.railway == 'platform' %}5{% else %}6{% endif %}{% endif %}",
+            "color": "{% if tags.railway == 'rail' or tags.railway == 'narrow_gauge' or tags.railway == 'disused' %}{% if tags.usage == 'main' %}#ff8100{% elseif tags.usage == 'branch' %}#daca00{% else %}#000000{% endif %}{% elseif tags.railway == 'subway' %}#0000ff{% elseif tags.railway == 'tram' %}#ff00ff{% elseif tags.railway == 'platform' %}#3f3f3f{% else %}#000000{% endif %}",
+            "dashArray": "2,4",
+            "lineCap": "butt"
+        },
         "style": {
             "color": "{% if tags.railway == 'rail' or tags.railway == 'narrow_gauge' or tags.railway == 'disused' %}{% if tags.usage == 'main' %}#ff8100{% elseif tags.usage == 'branch' %}#daca00{% else %}#000000{% endif %}{% elseif tags.railway == 'subway' %}#0000ff{% elseif tags.railway == 'tram' %}#ff00ff{% elseif tags.railway == 'platform' %}#3f3f3f{% else %}#000000{% endif %}",
             "weight": "{% if tags.service == 'yard' or tags.service == 'siding' or tags.service == 'spur' or tags.service == 'crossover' %}1{% else %}{% if tags.railway == 'rail' %}{% if tags.usage == 'main' or tags.usage == 'branch' %}3{% else %}2{% endif %}{% elseif tags.railway == 'platform' %}1{% else %}2{% endif %}{% endif %}",
@@ -15,6 +21,7 @@
             "fill": "{% if tags.railway == 'platform' %}1{% else %}{% endif %}",
             "opacity": 1.0
         },
+        "styles": "{% if tags.railway == 'narrow_gauge' %}default,casing{% else %}default{% endif %}",
         "markerSign": "",
         "body": "{{ tagTrans('railway', tags.railway) }}<br/>\n{% if tags.operator %}{{ keyTrans('operator') }}: {{ localizedTag(tags, 'operator') }}<br>{% endif %}\n{% if tags.usage %}{{ keyTrans('usage') }}: {{ tagTrans('usage', tags.usage)|default(trans('unknown')) }}<br/>{% endif %}\n{% if tags.service %}{{ keyTrans('service') }}: {{ tagTrans('service', tags.service ) }}<br/>{% endif %}\n{{ keyTrans('gauge') }}: {{ tags.gauge|default(trans('unknown')) }}<br/>\n{% if tags.electrified == 'no' %}{{ keyTrans('electrified') }}: {{ tagTrans('electrified', 'no') }}{% elseif tags.electrified %}{{ keyTrans('electrified') }}: {{ tagTrans('electrified', tags.electrified) }}, {{ keyTrans('voltage') }}: {{ tags.voltage|default(trans('unknown')) }}, {{ keyTrans('frequency') }}: {{ tags.frequency|default(trans('unknown')) }}<br/>{% endif %}\n",
         "description": "{{ tagTrans('railway', tags.railway) }}",