Should The vec Package Be Integrated Into rust_core?

[mcmah309]

vec: https://github.com/mcmah309/vec

Arguments For:

• Vec is just a typedef of List, so there is zero friction.
• vec provides a few new useful extension methods on List/Vec
• It would be convenient to not have to import another package.
• Using Vec can help denote to the developer "This is growable", over List which may not be.
• Users are not forced to use the Vec typedef.

Arguments Against:

• Rust's core library does not include Vec, it is included in the standard library.
• While adding Arr makes sense (an exension type of List that does not implement the List interface, and is treated as a non-growable) since an equivalent to Arr does not exist in Dart, List is literally equivalent to Vec.
• Users that do not use Vec may be annoyed that List has some new methods that are equivalent to existing e.g. add == push.

[mcmah309]

Added in v1.3.0