Release-candidate v0.68.0-rc.1

[jansegre]

Changes

• fix(nano): avoid exception when generating json #1421
• chore: bump hathorlib #1482
• chore[nginx]: Setup Nginx images for Testnet India #1459
• feat: add tracked object counts metric #1247
• chore: fix a large number of spelling issues #1136
• refactor: large module split to prepare for incorporating hathorlib #1485
• fix(nano): serialization on state api #1492
• chore: update localnet.yml to support nanos #1493
• fix(nano): fix nc creation API #1487
• refactor: remove vertex children from metadata #1495
• feat(nano): Improve Nano History HTTP API #1486
• fix(nano): do not allow dict in tuple/NamedTuple fields #1500
• feat(nano): emit a token-creation event including for nano executions #1494
• chore: add soft-voided to testnet-india because of #1500 #1504

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 is 85.61485% with 62 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.20%. Comparing base (21ab64a) to head (0cc2278).
⚠️ Report is 29 commits behind head on release-candidate.

Files with missing lines	Patch %	Lines
hathor/transaction/storage/rocksdb_storage.py	18.75%	26 Missing ⚠️
hathor/transaction/json_serializer.py	67.69%	15 Missing and 6 partials ⚠️
hathor/graphviz.py	50.00%	5 Missing ⚠️
hathor/event/event_manager.py	94.59%	1 Missing and 1 partial ⚠️
hathor/prometheus.py	66.66%	2 Missing ⚠️
hathor/transaction/resources/transaction.py	81.81%	0 Missing and 2 partials ⚠️
hathor/builder/builder.py	90.90%	0 Missing and 1 partial ⚠️
hathor/transaction/storage/cache_storage.py	80.00%	1 Missing ⚠️
...tion/storage/migrations/migrate_vertex_children.py	90.90%	1 Missing ⚠️
hathor/transaction/transaction.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##           release-candidate    #1502      +/-   ##
=====================================================
+ Coverage              86.09%   86.20%   +0.11%     
=====================================================
  Files                    437      440       +3     
  Lines                  33967    34055      +88     
  Branches                5316     5326      +10     
=====================================================
+ Hits                   29244    29358     +114     
+ Misses                  3680     3676       -4     
+ Partials                1043     1021      -22     

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