restore 3.0.0

README.md

array-flatten.d.ts

array-flatten.js

benchmark/code/arguments/pass-as-arguments.js

benchmark/code/arguments/pass-as-for.js

benchmark/code/arguments/pass-as-slice.js

benchmark/code/concat.js

benchmark/code/current.js

benchmark/code/depth/current.js

benchmark/code/depth/while.js

benchmark/code/flatten/concat.js

benchmark/code/flatten/current.js

benchmark/code/flatten/if-depth.js

benchmark/code/flatten/no-return.js

benchmark/code/flatten/reduce.js

benchmark/code/flatten/tostring.js

benchmark/code/flatten/while-2.js

benchmark/code/flatten/while-3.js

benchmark/code/flatten/while-4.js

benchmark/code/flatten/while.js