Origin accepts Integer arguments

[jishnub]

Now Origin accepts Integer arguments that may be coerced to Int.

After this PR:

julia> Origin(Int32(1))
Origin{Int64}(1)

Also disallow stuff like Origin(("abc",))

[codecov]

Codecov Report

Merging #229 (35833ca) into master (b74ae55) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #229      +/-   ##
==========================================
+ Coverage   94.40%   94.42%   +0.01%     
==========================================
  Files           5        5              
  Lines         322      323       +1     
==========================================
+ Hits          304      305       +1     
  Misses         18       18              

Impacted Files	Coverage Δ
src/origin.jl	100.00% <100.00%> (ø)

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[johnnychen94]

Maybe we can add a test_throw on Float64 value. (Ignore this if we already have one)

[jishnub]

Should we just convert all numbers to Ints here? Why restrict?

[johnnychen94]

Should we just convert all numbers to Ints here? Why restrict?

I don't see any drawbacks of this since it will throw meaningful enough errors if the conversion fails.