diff -r 135a744a7732 -r c9d11caf62fc gulpfile.js
--- a/gulpfile.js	Fri Dec 14 15:28:41 2018 +0100
+++ b/gulpfile.js	Fri Dec 14 18:33:40 2018 +0100
@@ -2,8 +2,7 @@
 	concat = require('gulp-concat');
 
 var package = require("./package.json"),
-	scripts = package.scripts,
-	sources = scripts.sources;
+	scripts = package.scripts;
 
 
 /** Fix pipe function */
@@ -36,13 +35,19 @@
 
 // Gulp tasks
 gulp.task('scripts', function() {
-	return gulp.src(sources, {cwd: scripts.base})
+	return gulp.src(scripts.sources, {cwd: scripts.base})
 		.pipe(concat(scripts.target.replace(/{version}/, package.version)))
 		.pipe(gulp.dest(scripts.base));
 });
 
-gulp.task('watch', function() {
-	gulp.watch(sources, {cwd: scripts.base}, ['scripts']);
+gulp.task('scripts-core', function() {
+	return gulp.src(scripts.core_sources, {cwd: scripts.base})
+		.pipe(concat(scripts.core_target.replace(/{version}/, package.version)))
+		.pipe(gulp.dest(scripts.base));
 });
 
-gulp.task('default', ['scripts', 'watch']);
+gulp.task('watch', function() {
+	gulp.watch(scripts.sources, {cwd: scripts.base}, ['scripts', 'scripts-core']);
+});
+
+gulp.task('default', ['scripts', 'scripts-core', 'watch']);