strongly request add interval setting for all Api

[xxxman2008]

Hi,

I know Async is so popular, so famous.
But many Async's api have no interval between function calls .. Last two days ,i spend whole time to find why "max call stack size exceeded" .

I used Async.until to check some conditions satisfied function running. And used it much times in my code. And then ....process crashed with "max call stack size exceeded".

Finally ,i changed to Async.retry ,..Then without any crash.

I strongly advised add "interval" setting for all other Api for stable running.

Raymond

[ex1st]

Please read https://github.com/caolan/async#synchronous-iteration-functions and #696

[xxxman2008]

Ok ,thank you ...my mistake ..:-)