Custom index.html

Atanas,

Is this still the status of custom index.html? I'm trying to implement auto refresh and keep losing this code:

<meta http-equiv="refresh" content="400" />

I've tried a js timer with setTimeout but the app goes unresponsive after a while. I think it's a memory thing on the devices we're using(?) The meta tag refresh seems to work indefinitely.

I will try appending the meta tag via js (?)
Open to other suggestions.

I understand you need to regenerate to populate new script names etc but it would be great if there was some way to do partial regen or a spot in the header & body that would be ignored.

TIA,
Josh