bump to v2.2.2

- [resp for #7] `NewOverlappedRingBuffer` returns `RichOverlappedRingBuffer[T]` now, which gives some new alternatives apis of `Enqueue` so that you can collect `overwrites` and `size` from the returning data.
  > The legacy codes keep its stable with the original `Enqueue`.
  > For a normal ringbuf, non-overlapped, nothing's changed since the current capacity (size) is not a very important value for measuring.
  > If not, issue me.

bump to v2.2.1

bump to v2.2.0

- added overlapped ring bugger implementation via `NewOverlappedRingBuffer()`

bump to v2.0.1

add timeout for coverage

bump to v1.0.3

bump to v2

bump to v1.0.0