add pandas series

[acezen]

What do these changes do?

support Series structure of pandas

Related issue number

Fixes #117

[acezen]

cc/ @sighingnow @andydiwenzhu any comment?

[codecov-io]

Codecov Report

Merging #118 (2b5450e) into main (d87643c) will increase coverage by 14.57%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             main     #118       +/-   ##
===========================================
+ Coverage   62.22%   76.79%   +14.57%     
===========================================
  Files          52       52               
  Lines        3833     3801       -32     
===========================================
+ Hits         2385     2919      +534     
+ Misses       1448      882      -566     

Impacted Files	Coverage Δ
src/server/services/etcd_meta_service.cc	81.48% <0.00%> (+5.55%)	⬆️
src/common/util/status.h	48.86% <0.00%> (+5.68%)	⬆️
src/common/util/status.cc	25.39% <0.00%> (+6.34%)	⬆️
src/server/services/etcd_meta_service.h	92.00% <0.00%> (+12.00%)	⬆️
src/common/util/protocols.cc	91.71% <0.00%> (+15.79%)	⬆️
src/server/memory/stream_store.cc	64.48% <0.00%> (+16.33%)	⬆️
src/server/async/socket_server.cc	84.64% <0.00%> (+18.89%)	⬆️
src/server/util/meta_tree.cc	74.86% <0.00%> (+19.81%)	⬆️
src/server/services/meta_service.h	77.07% <0.00%> (+26.52%)	⬆️
src/server/server/vineyard_server.cc	74.12% <0.00%> (+32.54%)	⬆️
... and 3 more

[andydiwenzhu]

LGTM

[sighingnow]

LGTM.

[sighingnow]

There's conflict after #110 merged. Could you rebase this PR agaist current main branch?

[andydiwenzhu]

LGTM

[acezen]

There's conflict after #110 merged. Could you rebase this PR agaist current main branch?

done.