libwren-sys 0.1.0

FFI bindings for the wren embedded programming language
Documentation 
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// Regression test for #373.
var map = {}
map[2] = "two"
map[0] = "zero"
map.remove(2)
map[0] = "zero again"
map.remove(0)

System.print(map.containsKey(0)) // expect: false