OR-Tools like dictionary input

[chkwon]

No description provided.

[codecov]

Codecov Report

Merging #7 (c9e80fd) into master (282f2cc) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master        #7   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines           80       104   +24     
=========================================
+ Hits            80       104   +24     

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

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