Implement on demand client async fragments

[tolgacesur]

No description provided.

[codecov]

Codecov Report

Merging #32 (412ab1a) into master (333d02c) will increase coverage by 0.17%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master      #32      +/-   ##
==========================================
+ Coverage   64.75%   64.92%   +0.17%     
==========================================
  Files          15       15              
  Lines         400      402       +2     
  Branches       73       74       +1     
==========================================
+ Hits          259      261       +2     
  Misses        141      141              

Impacted Files	Coverage Δ
src/core.ts	52.04% <66.66%> (+0.56%)	⬆️

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