Improve XprivAccount APIs

[dr-orlovsky]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 85.21739% with 17 lines in your changes missing coverage. Please review.

Project coverage is 42.6%. Comparing base (82a9b01) to head (8faa3bc).
Report is 12 commits behind head on master.

Files	Patch %	Lines
derive/src/xkey.rs	84.0%	17 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master     #36     +/-   ##
========================================
+ Coverage    36.8%   42.6%   +5.8%     
========================================
  Files          24      24             
  Lines        4153    4233     +80     
========================================
+ Hits         1528    1802    +274     
+ Misses       2625    2431    -194     

Flag	Coverage Δ
rust	42.6% <85.2%> (+5.8%)	⬆️

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[dr-orlovsky]

@zoedberg I assume I can merge it?

[zoedberg]

Yes, this can be merged. Thanks