this application is awesome; it does exactly what i needed!
it will be perfect with the following feature:
* change the window title from "playground" to reflect a page's head & title html tags.
this one is important!! i have to switch to another app, otherwise
* font or whole page scaling
* faster updating
* add py and css extension defaults
* some kind of time feedback to show the page has been or is in the process of updating (for slow scripts)
* window resize presets (800, 1024, etc.)