replace lookbehind regex (closes #69)

Author: Delagen

lib/pocompiler.js

@@ -182,7 +182,13 @@ Compiler.prototype._addPOString = function (key = '', value = '', obsolete = fal
   } else {
     // split only on new lines
     if (escapeCharacters) {
-      lines = value.split(/(?<=\\n)/);
+      lines = value.split(/\\n/g);
+      for (let i = 0; i < lines.length - 1; i++) {
+        lines[i] = `${lines[i]}\\n`;
+      }
+      if (lines.length && lines[lines.length - 1] === '') {
+        lines.splice(-1, 1);
+      }
     }
   }