Fixes for 32 bit

[crimsonred]

No description provided.

[codecov-io]

Codecov Report

Merging #58 into master will decrease coverage by 0.22%.
The diff coverage is 58.33%.

@@            Coverage Diff             @@
##           master      #58      +/-   ##
==========================================
- Coverage   81.22%   80.99%   -0.23%     
==========================================
  Files          39       39              
  Lines        3942     3963      +21     
==========================================
+ Hits         3202     3210       +8     
- Misses        655      668      +13     
  Partials       85       85

Impacted Files	Coverage Δ
pubnub.go	80.1% <ø> (ø)	⬆️
presence_request.go	0% <0%> (ø)	⬆️
heartbeat_manager.go	75.91% <100%> (+0.72%)	⬆️
heartbeat_request.go	76.25% <100%> (+1.25%)	⬆️
subscription_manager.go	74.94% <100%> (-0.49%)	⬇️
history_request.go	85.44% <100%> (ø)	⬆️
publish_request.go	78.67% <100%> (ø)	⬆️

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