Add script version, web engine, line numbers to error messages.

package.json

@@ -3,6 +3,7 @@
   "description": "Cross-browser userscript for maximum lurking on 4chan.",
   "meta": {
     "name": "4chan X",
+    "fork": "ccd0",
     "version": "1.11.9.0",
     "date": "2015-08-15T18:45:44.807Z",
     "page": "https://www.4chan-x.net/",

src/General/Main.coffee

@@ -328,7 +328,10 @@ Main =
       textContent: data.message
     error = $.el 'div',
       textContent: "#{data.error.name or 'Error'}: #{data.error.message or 'see console for details'}"
-    [message, error]
+    lines = data.error.stack?.match(/\d+(?=:\d+\)?$)/mg)?.join().replace(/^/, ' at ') or ''
+    context = $.el 'div',
+      textContent: "(<%= meta.name %> <%= meta.fork %> v#{g.VERSION} <%= type %> on #{$.engine}#{lines})"
+    [message, error, context]
 
   isThisPageLegit: ->
     # 404 error page or similar.