deadpool 0.2.3

Dead simple async pool
Documentation
# Change Log

## v0.2.3

* Add documentation for `docs.rs`
* Remove `PoolInner` and `PoolSize` struct from public interface
* Improve example in `README.md` and crate root

## v0.2.2

* Update to `tokio 0.2`

## v0.2.1

* Version skipped; only `tokio-postgres` was updated.

## v0.2.0

* Split `deadpool` and `deadpool-postgres` in separate crates instead of
    one with feature flags.

## v0.1.0

* First release