add call/2..8

[ichiban]

#144

[codecov-commenter]

Codecov Report

Merging #156 (ffa11ff) into main (6f7937c) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #156      +/-   ##
==========================================
+ Coverage   93.90%   93.99%   +0.08%     
==========================================
  Files          18       18              
  Lines        5281     5360      +79     
==========================================
+ Hits         4959     5038      +79     
  Misses        272      272              
  Partials       50       50              

Impacted Files	Coverage Δ
engine/builtin.go	91.39% <100.00%> (+0.16%)	⬆️
engine/vm.go	82.64% <100.00%> (+1.67%)	⬆️
interpreter.go	92.61% <100.00%> (+0.26%)	⬆️

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