change Arch function to an Async function and adding getHighEntropyVa…

[roozbehshafieebafti]

Hi, Hope you will be fine.

I'm not sure how many people suggest this issue, (I think many people :).

Honestly by adding this feature many packages wont work correctly, but I think it is necessary. because navigator.platform deprecated and wont work in near future. therefor it is not bad to update package.

with regards