Parse and serialize circe AST using jsoniter-scala

[plokhotnyuk]

Results of benchmarks:

[info] REMEMBER: The numbers below are just data. To gain reusable insights, you need to follow up on
[info] why the numbers are the way they are. Use profilers (see -prof, -lprof), design factorial
[info] experiments, perform baseline and negative tests that provide experimental control, make sure
[info] the benchmarking environment is safe on JVM/OS/HW level, ask for reviews from the domain experts.
[info] Do not assume the numbers tell you what you want them to tell.
[info] Benchmark                                   Mode  Cnt      Score      Error  Units
[info] GeoJSONReading.circe                       thrpt    5   6434.510 ±  387.368  ops/s
[info] GeoJSONReading.circeJsoniter               thrpt    5   6503.791 ±  244.144  ops/s
[info] GeoJSONReading.jsoniterScala               thrpt    5  38970.101 ±  319.176  ops/s
[info] GeoJSONWriting.circe                       thrpt    5   4044.570 ±  356.425  ops/s
[info] GeoJSONWriting.circeJsoniter               thrpt    5   6216.887 ±  468.054  ops/s
[info] GeoJSONWriting.jsoniterScala               thrpt    5  13440.258 ±  108.046  ops/s
[info] GoogleMapsAPIPrettyPrinting.circe          thrpt    5   7556.502 ±  949.123  ops/s
[info] GoogleMapsAPIPrettyPrinting.circeJsoniter  thrpt    5   8787.719 ±  137.656  ops/s
[info] GoogleMapsAPIPrettyPrinting.jsoniterScala  thrpt    5  48592.752 ± 2897.298  ops/s
[info] GoogleMapsAPIReading.circe                 thrpt    5   8258.472 ±  416.014  ops/s
[info] GoogleMapsAPIReading.circeJsoniter         thrpt    5   9435.155 ±  371.863  ops/s
[info] GoogleMapsAPIReading.jsoniterScala         thrpt    5  31316.494 ±  439.374  ops/s
[info] GoogleMapsAPIWriting.circe                 thrpt    5   8031.358 ±  178.514  ops/s
[info] GoogleMapsAPIWriting.circeJsoniter         thrpt    5   9392.853 ± 1066.635  ops/s
[info] GoogleMapsAPIWriting.jsoniterScala         thrpt    5  91760.728 ± 3033.358  ops/s
[info] TwitterAPIReading.circe                    thrpt    5  12922.692 ±  170.774  ops/s
[info] TwitterAPIReading.circeJsoniter            thrpt    5  17641.198 ±  383.072  ops/s
[info] TwitterAPIReading.jsoniterScala            thrpt    5  41987.413 ± 2753.776  ops/s

[codecov]

Codecov Report

Merging #285 into master will decrease coverage by 0.05%.
The diff coverage is 95.52%.

@@            Coverage Diff             @@
##           master     #285      +/-   ##
==========================================
- Coverage     100%   99.94%   -0.06%     
==========================================
  Files         176      177       +1     
  Lines        5096     5163      +67     
  Branches      492      494       +2     
==========================================
+ Hits         5096     5160      +64     
- Misses          0        3       +3

Impacted Files	Coverage Δ
...nyuk/jsoniter_scala/benchmark/GeoJSONWriting.scala	100% <100%> (ø)	⬆️
...k/jsoniter_scala/benchmark/TwitterAPIReading.scala	100% <100%> (ø)	⬆️
...nyuk/jsoniter_scala/benchmark/GeoJSONReading.scala	100% <100%> (ø)	⬆️
...soniter_scala/benchmark/GoogleMapsAPIWriting.scala	100% <100%> (ø)	⬆️
...soniter_scala/benchmark/GoogleMapsAPIReading.scala	100% <100%> (ø)	⬆️
..._scala/benchmark/GoogleMapsAPIPrettyPrinting.scala	100% <100%> (ø)	⬆️
...chmark/src/main/scala/io/circe/CirceJsoniter.scala	94.82% <94.82%> (ø)

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