[Enhancement][Fix] Copy PR #904 & #915 to the v1 dev branch

[zhanggefan]

Copy PR #904 & #915 to the v1 dev branch

[Tai-Wang]

Hi @zhanggefan , we will rebase v1.0.0.dev0 with the latest master from time to time when several new PRs are merged into master, so I think this PR is not necessary?

[codecov]

Codecov Report

Merging #963 (ba91f51) into v1.0.0.dev0 (4a804bf) will decrease coverage by 0.00%.
The diff coverage is 50.00%.

❗ Current head ba91f51 differs from pull request most recent head 53d7836. Consider uploading reports for the commit 53d7836 to get more accurate results

@@               Coverage Diff               @@
##           v1.0.0.dev0     #963      +/-   ##
===============================================
- Coverage        50.50%   50.50%   -0.01%     
===============================================
  Files              226      226              
  Lines            16825    16827       +2     
  Branches          2697     2697              
===============================================
+ Hits              8498     8499       +1     
- Misses            7796     7797       +1     
  Partials           531      531              

Flag	Coverage Δ
unittests	50.50% <50.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmdet3d/ops/voxel/voxelize.py	80.76% <50.00%> (-1.24%)	⬇️

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[zhanggefan]

@Tai-Wang Ok I got it. Close this for now.