Patch bump for #51

[Tokazama]

Also changed nidim to to_dim_i16 b/c it is slightly faster and preps for
NIfTI-v2 headers

[codecov]

Codecov Report

Merging #52 (ca36e73) into master (9eaad22) will not change coverage.
The diff coverage is 90.90%.

@@           Coverage Diff           @@
##           master      #52   +/-   ##
=======================================
  Coverage   42.97%   42.97%           
=======================================
  Files           4        4           
  Lines         370      370           
=======================================
  Hits          159      159           
  Misses        211      211           

Impacted Files	Coverage Δ
src/parsers.jl	33.33% <90.00%> (+7.35%)	⬆️
src/NIfTI.jl	62.09% <100.00%> (-1.72%)	⬇️

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