Split qml-parser changes from UglifyJS parse-js

This will allow us to update UglifyJS to a more recent version.

parse-js.js is imported from UglifyJS e83767ec5 (between v1.0.1 and v1.0.2).
See also initial commit: 2438ae7

One modification is still present in parse-js.js on top of UglifyJS version:
22ccc1c, but that one is already present in
newer UglifyJS versions, and the next step here would be to update to an
already fixed version.

This commit breaks coverage reportings due to eval(), I'm going to refactor
that later.

Closes: #2
Refs: #3

Author: ChALkeR

gulpfile.js

@@ -8,7 +8,9 @@ const sourcemaps = require('gulp-sourcemaps');
 const iife = require('gulp-iife');
 
 const sources = [
-  'src/**/*.js'
+  'src/header.js',
+  'src/parse-js.js',
+  'src/api.js',
 ];
 
 gulp.task('build-dev', function() {

package.json

@@ -19,8 +19,8 @@
     "tape": "^4.5.1"
   },
   "scripts": {
-    "test": "tape ./tests/tape.js",
-    "cover": "istanbul cover tape ./tests/tape.js",
+    "test": "gulp build; tape ./tests/tape.js",
+    "cover": "gulp build; istanbul cover tape ./tests/tape.js",
     "build": "gulp build",
     "watch": "gulp watch"
   },