added ratelimit client

[Code-Hex]

Azure/azure-storage-azcopy@dd4b525

[codecov]

Codecov Report

Merging #40 (4fecce3) into master (e73109e) will increase coverage by 2.56%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #40      +/-   ##
==========================================
+ Coverage   66.73%   69.30%   +2.56%     
==========================================
  Files           6        7       +1     
  Lines         478      518      +40     
==========================================
+ Hits          319      359      +40     
  Misses        117      117              
  Partials       42       42              

Impacted Files	Coverage Δ
client.go	100.00% <100.00%> (ø)
download.go	71.92% <100.00%> (+0.33%)	⬆️
pget.go	55.90% <100.00%> (+1.43%)	⬆️
requests.go	65.51% <100.00%> (+0.81%)	⬆️

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