List Indices

[honkling]

List indices should move around automatically when deleting or removing an element from a list.

set {_a::*} to 1, 2, and 3
delete {_a::2}

# Expected Result:
{_a::1} = 1
{_a::2} = 3

# Current Actual Result:
{_a::1} = 1
{_a::2} = <none>
{_a::3} = 3