I recently transformed my website into an ionic app, and I've noticed that the app size is almost 15MB. All my JS, HTML, and CSS files are currently stored in the www/app directory, with Bower components located in www/lib. To optimize the size of the apk, I use gulp to consolidate my .js and .css files, placing them in www/js and www/css folders, respectively. My concern is whether Ionic compiles just the contents of the www folder into the apk or the entire project directory. I'm considering moving my source files outside the directory and using gulp to concatenate and store them in www. Additionally, I plan to remove unnecessary bower files. Will these actions reduce the size of the apk? Are there any other recommended practices I should implement to minimize the size?