Update the ESLint dependencies, and also tweak the no-multiple-empty-lines rules

Since multiple empty lines is virtually unused in the code-base, and the few cases that do exist look like "typos", let's enforce greater consistency here; please see https://eslint.org/docs/rules/no-multiple-empty-lines.

src/core/evaluator.js

@@ -1351,7 +1351,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
           textContentItem.textRunBreakAllowed = false;
         }
 
-
         textContentItem.initialized = true;
         return textContentItem;
       }