Allow NA value for geodesic attribute

[paleolimbot]

No description provided.

[codecov-commenter]

Codecov Report

Merging #130 (e8dd09d) into master (960c07f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #130   +/-   ##
=======================================
  Coverage   98.94%   98.94%           
=======================================
  Files          74       74           
  Lines        5299     5315   +16     
=======================================
+ Hits         5243     5259   +16     
  Misses         56       56           

Impacted Files	Coverage Δ
R/pkg-vctrs.R	100.00% <100.00%> (ø)
R/plot.R	100.00% <100.00%> (ø)
R/wk-crs.R	100.00% <100.00%> (ø)
R/wkb.R	93.18% <100.00%> (ø)
R/wkt.R	94.73% <100.00%> (ø)

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