g3tiles: various updates

[zh-jq-b]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.82%. Comparing base (53b6f03) to head (e155ca7).
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #615      +/-   ##
==========================================
+ Coverage   54.79%   54.82%   +0.03%     
==========================================
  Files        1186     1186              
  Lines      109900   109900              
==========================================
+ Hits        60219    60253      +34     
+ Misses      49681    49647      -34     

Flag	Coverage Δ
g3bench	32.73% <ø> (-0.01%)	⬇️
g3proxy	53.66% <ø> (+0.03%)	⬆️
lib	24.86% <ø> (ø)

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