Release v0.68.0

[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

Release-candidates

• Release-candidate v0.68.0-rc.1 #1502

Checklist

• I've read and followed the release process described in https://github.com/HathorNetwork/ops-tools/blob/master/docs/release-guides/hathor-core.md#stable-release
• The QA process was run successfully during the tests of the corresponding release-candidate(s)

[codecov]

Codecov Report

❌ Patch coverage is 85.61485% with 62 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.24%. Comparing base (21ab64a) to head (4615e9a).
⚠️ Report is 30 commits behind head on release.

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    #1505      +/-   ##
===========================================
+ Coverage    86.09%   86.24%   +0.15%     
===========================================
  Files          437      440       +3     
  Lines        33967    34055      +88     
  Branches      5316     5326      +10     
===========================================
+ Hits         29244    29371     +127     
+ Misses        3680     3664      -16     
+ Partials      1043     1020      -23     

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