Release-candidate v0.56.0-rc.1

[jansegre]

Changes

• refactor(event-queue): improve event ordering #738
• Release v0.55.0 #741
• chore(feature-activation): update feature endpoint visibility to public #743
• chore(event-queue): update event endpoints visibility to public #746
• chore: improve merkle path log #745
• fix(event-queue): improve memory usage during the load phase #744
• fix(sync-v2): compare to local bytes broke in some cases #747
• refactor(sync-v2): rename SyncAgent module from manager to agent #748
• feat: add best_blockchain in /status payload #704
• fix(tests): make simulator test not flaky on sync-v2 #750
• feat(feature-activation): implement signal bits in mining blocks #703
• chore: improve miner simulator flakiness #753
• chore: bump version to v0.56.0 #757
• chore: add deprecation warning for Python 3.9 #759
• feat(feature-activation): add logging of NOP features #760
• refactor: extracts SysctlRunner from SysctlProtocol #739
• feat(feature-activation): configure NOP features on testnet #761
• fix: imports #762
• chore: improve pubsub #694

Checklist

• I've read and followed the release candidate process described in https://github.com/HathorNetwork/ops-tools/blob/master/docs/release-guides/hathor-core.md#release-candidate
• I confirm this release candidate only includes production-ready changes

[codecov]

Codecov Report

Patch coverage: 89.40% and project coverage change: +0.20% 🎉

Comparison is base (f5248a4) 84.58% compared to head (78229b7) 84.78%.

Additional details and impacted files

@@                  Coverage Diff                  @@
##           release-candidate     #764      +/-   ##
=====================================================
+ Coverage              84.58%   84.78%   +0.20%     
=====================================================
  Files                    252      259       +7     
  Lines                  21686    21900     +214     
  Branches                2936     2960      +24     
=====================================================
+ Hits                   18343    18569     +226     
+ Misses                  2707     2687      -20     
- Partials                 636      644       +8     

Files Changed	Coverage Δ
hathor/event/resources/event.py	86.84% <ø> (ø)
hathor/feature_activation/resources/feature.py	94.04% <ø> (ø)
hathor/p2p/sync_v2/agent.py	78.02% <ø> (ø)
hathor/p2p/sync_v2/mempool.py	94.11% <ø> (ø)
hathor/simulator/trigger.py	100.00% <ø> (ø)
hathor/debug_resources.py	58.41% <33.33%> (-0.35%)	⬇️
hathor/manager.py	81.68% <52.63%> (-1.01%)	⬇️
hathor/p2p/utils.py	73.87% <66.66%> (-1.40%)	⬇️
hathor/simulator/fake_connection.py	83.42% <70.00%> (-2.46%)	⬇️
hathor/sysctl/protocol.py	79.01% <80.76%> (-5.31%)	⬇️
... and 36 more

... and 4 files with indirect coverage changes

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