Set options globally

[sckott]

fix #48

[codecov-io]

Codecov Report

Merging #85 into master will decrease coverage by 2.09%.
The diff coverage is 3.84%.

@@            Coverage Diff            @@
##           master      #85     +/-   ##
=========================================
- Coverage   72.83%   70.73%   -2.1%     
=========================================
  Files          22       23      +1     
  Lines         843      868     +25     
=========================================
  Hits          614      614             
- Misses        229      254     +25

Impacted Files	Coverage Δ
R/httprequest.R	80.95% <0%> (-3.21%)	⬇️
R/set.R	0% <0%> (ø)
R/client.R	76.68% <20%> (-1.93%)	⬇️

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