Use balance estimates from past payments in path-finding

[thomash-acinq]

No description provided.

[codecov-commenter]

Codecov Report

Merging #2308 (a834222) into master (3547f87) will decrease coverage by 0.05%.
The diff coverage is 90.47%.

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@@            Coverage Diff             @@
##           master    #2308      +/-   ##
==========================================
- Coverage   85.87%   85.83%   -0.05%     
==========================================
  Files         215      215              
  Lines       17823    17826       +3     
  Branches      761      759       -2     
==========================================
- Hits        15306    15301       -5     
- Misses       2517     2525       +8     

Files Changed	Coverage Δ
...re/src/main/scala/fr/acinq/eclair/NodeParams.scala	92.99% <0.00%> (-0.30%)	⬇️
.../src/main/scala/fr/acinq/eclair/router/Graph.scala	97.00% <93.33%> (-0.34%)	⬇️
...cinq/eclair/remote/EclairInternalsSerializer.scala	97.82% <100.00%> (ø)
...scala/fr/acinq/eclair/router/BalanceEstimate.scala	98.91% <100.00%> (-0.03%)	⬇️
...cala/fr/acinq/eclair/router/RouteCalculation.scala	94.56% <100.00%> (ø)

... and 5 files with indirect coverage changes