Remove List from src/core

[evilsoft]

Description/Location

location: 'src/core/List.js'
description:
The only reason List is in core is for some specs and use in src/Pair/toPairs. It actually makes more sense to have toPairs return an Array of Pairs. With that done

Task List

• Alter toPairs to return Array instead List
• Remove/Replace specs using List inside of src/Async/Async.spec.js
• Remove/Replace specs using List inside of src/Maybe/find.spec.js
• Move implementation from src/core/List.js and src/core/List.spec.js to src/List/index.js and src/List/List.spec.js
• Update the documentation