Integrate bitcoiner.live for another fee estimate API

[Deleted user]

https://www.reddit.com/r/Bitcoin/comments/bgg5n7/stop_overpaying_fees_i_made_a_website_to_give/

https://bitcoiner.live/doc/api

Looks pretty good. I can probably get around to this but wanted to make a note here.

[ofek]

Awesome!