- rebalances liquidity between channels through circular payments
- automatically selects appropriate channels and executes rebalance
- uses economic fee by default: the rebalance transaction fees are less than the node's default fee, so it is cheaper to fix the liquidity than it can be ruined by transaction forwards
- runs async in the background, sometimes for a very long time (maybe hours)
- tries to rebalance small channels to a 50/50 liquidity ratio and stores remaining liquidity in big channels
- does nothing if there is no cheap enough circular route for rebalance
* doc: cleanup and key-value for optional parameters
* rebalance: cleanup and refinements
* sendinvoiceless: cleanup and refinements
* summary: reflects upcoming changes of pylightning to_approx_str
* rebalance: check peer connection on local channels
