Change default pool to public-pool.io

Hello

The default pool set pool.vkbit.com have gone through a recent upgrade which made it not usable for low hashrate devices as it does ot show the hashate accurately anymore on the web interface. After discussion with the maintainer in the appropriate support channel he confirmed the changes would not be reverted, that he would rather to privilege higher hashrate devices and advise to move lower hashrate devices to public-pool.io.

Could you then make the default pool for the next release **stratum+tcp://public-pool.io:21496** ?

Thanks


Start by locating where the default pool is defined in the miner configuration or startup entry point. Change the default to stratum+tcp://public-pool.io:21496 and verify that a new build uses this endpoint when no pool is specified.

Written by the indexing model from the issue text.