## swapbits

### Instructions

Write a function that takes a byte, swaps its halves (like the example) and
returns the result.

Your function must be declared as follows:

```go
func SwapBits(octet byte) byte {

}
```

Example:

1 byte

---

```
0100 | 0001
    \ /
    / \
0001 | 0100
```