Merge v2 with main.

[nekitdev]

This is the tracking PR of the new release of gd.py, aka 2.0.0.

[codecov]

Codecov Report

Attention: Patch coverage is 35.42471% with 669 lines in your changes are missing coverage. Please review.

Project coverage is 57.77%. Comparing base (60f5e67) to head (30e1e93).
Report is 1 commits behind head on main.

❗ Current head 30e1e93 differs from pull request most recent head 29d73e9. Consider uploading reports for the commit 29d73e9 to get more accurate results

Files	Patch %	Lines
gd/api/levels.py	20.28%	110 Missing ⚠️
gd/api/database/database.py	18.18%	99 Missing ⚠️
gd/api/database/variables.py	7.29%	89 Missing ⚠️
gd/api/header.py	27.35%	85 Missing ⚠️
gd/api/color_channels.py	39.21%	62 Missing ⚠️
gd/api/database/storage.py	13.23%	59 Missing ⚠️
gd/api/database/statistics.py	37.50%	45 Missing ⚠️
gd/api/database/unlock_values.py	26.31%	28 Missing ⚠️
gd/artist.py	56.52%	20 Missing ⚠️
gd/api/rewards.py	40.00%	18 Missing ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #129      +/-   ##
==========================================
+ Coverage   50.20%   57.77%   +7.56%     
==========================================
  Files         118      112       -6     
  Lines       21504    18005    -3499     
==========================================
- Hits        10797    10403     -394     
+ Misses      10707     7602    -3105     

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