Fix the includes function

[akihiro17]

Resolve #118

In this commit, includes iterates over an array and returns true if it finds a match. Additionally, I have added more test cases for the includes function.

I guess this commit introduces a breaking change to the includes function.

before

script

import { includes } from "std"

let array = [1, 2]

echo includes(array, 1)
echo includes(array, "1")

1
1

after

Cannot compare two values of different types 'Num' == 'Text'
at [standard library]:125:14
in test.ab:1:1

[Ph0enixKM]

Great PR! I was about to fix it asap. Well done! 🎉

LGTM

[arapower]

LGTM