#236 Fixed rate information parsing

[DanielaSfregola]

I believe this caused #236: we were unable to parse Instant from long and int

[codecov]

Codecov Report

Merging #268 into master will decrease coverage by 1.6%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #268      +/-   ##
==========================================
- Coverage   94.28%   92.68%   -1.61%     
==========================================
  Files          76       77       +1     
  Lines        1173     1176       +3     
  Branches       12       10       -2     
==========================================
- Hits         1106     1090      -16     
- Misses         67       86      +19

Impacted Files	Coverage Δ
...ola/twitter4s/http/serializers/CustomFormats.scala	100% <ø> (ø)	⬆️
...egola/twitter4s/http/serializers/JsonSupport.scala	91.66% <100%> (+0.75%)	⬆️
...itter4s/http/clients/streaming/TwitterStream.scala	20% <0%> (-80%)	⬇️
...ter4s/http/clients/streaming/StreamingClient.scala	65% <0%> (-35%)	⬇️
...sfregola/twitter4s/http/clients/CommonClient.scala	30% <0%> (-30%)	⬇️
...regola/twitter4s/processors/TwitterProcessor.scala	0% <0%> (ø)

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[DanielaSfregola]

LGTM