sling: update to v4.0.0

[daywalker90]

[4.0.0] - 2025-07-28

Removed

• Dropped support for CLN <= v24.02, upgrade your node!
• ⚠️ Make sure to comment out any removed options in your config
• sling-refresh-peers-interval: Lowering it from the default 1 doesn't help much and if you must set it higher your node is probably too slow anyways
• sling-refresh-gossmap-interval: Gossip reader is so fast now there is no good reason to keep it

Added

• sling-once: New command to rebalance a specific amount once
• sling-stats: Added human readable table view for when you provide a ShortChannelId, json flag can still be set
• Sling now also periodically reads constraint information from the xpay layer in CLN >= v24.11

Changed

• Optimized gossip file reader to be ~20x faster with similar memory usage. On my system it can read a fully synced gossip file in ~110ms and periodical checks for updates are now instant: ~0ms.
• Optimized route search to be ~2x faster, on my system down from ~25ms to ~13ms.
• Make use of the new trace level logging, some debug logs are now trace
• If possible show node alias in failure log message instead of id
• sling-reset-liquidity-interval: Default value increased to 360m again, if liquidity beliefs are forgotten too quickly it may result in an infinite loop of trying the very cheapest, never succeeding paths
• Slightly increased the minimum channel cost in pathfinding
• Use actual default options so they show up in CLN's listconfigs
• Refactor to show method usage in CLN's help
• switch from jemalloc to mimalloc for compatibility on systems using page sizes >4k

Fixed

• You can no longer add your own channels or your own node id to exceptions, for candidate control use candidatelist/outppm
• Jobstates are now sorted properly in the stats view

[3.0.6] - 2025-05-03

Fixed

• no longer require scid aliases for private channels during route calculation aswell

[3.0.5] - 2025-05-01

Changed

• no longer require scid aliases for private channels

[3.0.4] - 2025-04-29

Added

• more debug logging for candidates selection

Changed

• only add private channels to graph if they have an alias, remove private channels without an alias
• lower log level to debug for repetitive graph refresh lines