add .to_json()

[Flipez]

Signed-off-by: Flipez code@brauser.io

[vercel]

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[codecov]

Codecov Report

Merging #82 (17199eb) into master (e84f176) will increase coverage by 0.06%.
The diff coverage is 92.50%.

@@            Coverage Diff             @@
##           master      #82      +/-   ##
==========================================
+ Coverage   85.73%   85.79%   +0.06%     
==========================================
  Files          90       90              
  Lines        2811     2844      +33     
==========================================
+ Hits         2410     2440      +30     
- Misses        343      345       +2     
- Partials       58       59       +1     

Impacted Files	Coverage Δ
object/hash.go	96.66% <82.35%> (-3.34%)	⬇️
object/array.go	100.00% <100.00%> (ø)
object/boolean.go	100.00% <100.00%> (ø)
object/float.go	100.00% <100.00%> (ø)
object/integer.go	100.00% <100.00%> (ø)
object/object.go	83.90% <100.00%> (+0.57%)	⬆️
object/string.go	100.00% <100.00%> (ø)

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