TsilCev

LinkedList on Vec. Add and remove O(1) amortized. It has a similar interface to LinkedList and similar to Vec.

Example

```rust use tsil_cev::TsilCev;

let mut tc = TsilCev::from(vec![5, 6, 7, 8, 9, 10]); tc.push_front(4);

let mut cursor = tc.cursorfrontmut(); assert_eq!(cursor.current(), Some(&4));

cursor.movenext(); asserteq!(cursor.current(), Some(&5));

cursor.remove(); assert_eq!(cursor.current(), Some(&6));

cursor.remove().remove().movenextlength(2); assert_eq!(cursor.current(), Some(&10));

cursor.moveprev(); asserteq!(cursor.current(), Some(&9));

let _ = tc.drainfiltertsil(|x| *x % 2 == 0).collect::>(); asserteq!(tc.tovec(), &[9]); ```

Comparison with LinkedList (thank Criterion)

Current Implementation

The allocator for the elements is Vec and each element has two indexes (next and previous element). Also if the number of elements is less than capacity / 4 then it is reallocated to size capacity / 2. The time of addition and removal is amortized to O(1).