Add show methods

[tkf]

No description provided.

[codecov]

Codecov Report

Merging #30 (dde3106) into main (ab235a1) will increase coverage by 1.95%.
The diff coverage is 96.87%.

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
+ Coverage   73.14%   75.10%   +1.95%     
==========================================
  Files           7        7              
  Lines         216      245      +29     
==========================================
+ Hits          158      184      +26     
- Misses         58       61       +3     

Flag	Coverage Δ
Pkg.test	75.10% <96.87%> (+1.95%)	⬆️

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Impacted Files	Coverage Δ
src/Try.jl	66.66% <ø> (ø)
src/function.jl	71.42% <90.90%> (-5.50%)	⬇️
src/show.jl	100.00% <100.00%> (ø)

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