actix-protobuf 0.4.0

# Changes

## 0.4.0 (2019-05-18)

* Upgrade to actix-web 1.0.0-rc
* Removed `protobuf` method for `HttpRequest` (use `ProtoBuf` extractor instead)

## 0.3.0 (2019-03-07)

* Upgrade to actix-web 0.7.18

## 0.2.0 (2018-04-10)

* Provide protobuf extractor

## 0.1.0 (2018-03-21)

* First release