[REQUEST] The miner will only start if no other tabs are already mining
Hello,
first of all, amazing project, and thank you to share it, keep it up!!

I successfully make all working, but I have a question:
is intended that when a user open multiple tabs with the javascript webminer also the server see multiple workers (and also more CPU load to the client)?
In CoinHive, by default, only one worker would work, due to this:
https://coinhive.com/documentation/miner

> CoinHive.IF_EXCLUSIVE_TAB | The miner will only start if no other tabs are already mining. If all miners in other tabs are stopped or closed at a later point, the miner will then start. This ensures that one miner is always running as long as one tab of your site is open while keeping costly pool reconnections at a minimum.


Hope to see this implemented soon
