Add parsing options

[bicycle1885]

[codecov[bot]]

Codecov Report

Merging #143 into master will increase coverage by 0.10%. The diff coverage is 91.30%.

@@            Coverage Diff             @@
##           master     #143      +/-   ##
==========================================
+ Coverage   93.55%   93.65%   +0.10%     
==========================================
  Files           7        7              
  Lines         760      772      +12     
==========================================
+ Hits          711      723      +12     
  Misses         49       49              

Impacted Files	Coverage Δ
src/document.jl	95.23% <90.47%> (+0.34%)	:arrow_up:
src/error.jl	96.77% <100.00%> (+0.22%)	:arrow_up:

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