Update rocket_codegen requirement from 0.3 to 0.4

Updates the requirements on rocket_codegen to permit the latest version.

Release notes

*Sourced from [rocket_codegen's releases](https://github.com/SergioBenitez/Rocket/releases).* > ## Rocket v0.4.0 > See the [CHANGELOG](https://github.com/SergioBenitez/Rocket/CHANGELOG.md) and [news article](https://rocket.rs/v0.4/news/2018-12-08-version-0.4/) for more information.

Changelog

*Sourced from [rocket_codegen's changelog](https://github.com/SergioBenitez/Rocket/blob/master/CHANGELOG.md).* > # Version 0.4.0 (Dec 06, 2018) > > ## New Features > > This release includes the following new features: > > * Introduced [Typed URIs]. > * Introduced [ORM agnostic database support]. > * Introduced [Request-Local State]. > * Introduced mountable static-file serving via [`StaticFiles`]. > * Introduced automatic [live template reloading]. > * Introduced custom stateful handlers via [`Handler`]. > * Introduced [transforming] data guards via [`FromData::transform()`]. > * Introduced revamped [query string handling]. > * Introduced the [`SpaceHelmet`] security and privacy headers fairing. > * Private cookies are gated behind a `private-cookies` default feature. > * Added [derive for `FromFormValue`]. > * Added [derive for `Responder`]. > * Added [`Template::custom()`] for customizing templating engines including > registering filters and helpers. > * Cookies are automatically tracked and propagated by [`Client`]. > * Private cookies can be added to local requests with > [`LocalRequest::private_cookie()`]. > * Release builds default to the `production` environment. > * Keep-alive can be configured via the `keep_alive` configuration parameter. > * Allow CLI colors and emoji to be disabled with `ROCKET_CLI_COLORS=off`. > * Route `format` accepts [shorthands] such as `json` and `html`. > * Implemented [`Responder` for `Status`]. > * Added [`Response::cookies()`] for retrieving response cookies. > * All logging is disabled when `log` is set to `off`. > * Added [`Metadata`] guard for retrieving templating information. > * The [`Uri`] type parses URIs according to RFC 7230 into one of [`Origin`], > [`Absolute`], or [`Authority`]. > * Added [`Outcome::and_then()`], [`Outcome::failure_then()`], and > [`Outcome::forward_then()`]. > * Implemented `Responder` for `&[u8]`. > * Any `T: Into>` can be [`mount()`]ed. > * [Default rankings] range from -6 to -1, differentiating on static query > strings. > * Added [`Request::get_query_value()`] for retrieving a query value by key. > * Applications can launch without a working directory. > * Added [`State::from()`] for constructing `State` values. > > [`SpaceHelmet`]: https://api.rocket.rs/v0.4/rocket_contrib/helmet/index.html > [`State::from()`]: https://api.rocket.rs/v0.4/rocket/struct.State.html#method.from > [Typed URIs]: https://rocket.rs/v0.4/guide/responses/#typed-uris > [ORM agnostic database support]: https://rocket.rs/v0.4/guide/state/#databases > [`Template::custom()`]: https://api.rocket.rs/v0.4/rocket_contrib/templates/struct.Template.html#method.custom > [`LocalRequest::private_cookie()`]: https://api.rocket.rs/v0.4/rocket/local/struct.LocalRequest.html#method.private_cookie > [`LocalRequest`]: https://api.rocket.rs/v0.4/rocket/local/struct.LocalRequest.html > ... (truncated)

Commits

- See full diff in [compare view](https://github.com/SergioBenitez/Rocket/commits/v0.4.0)

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svenstaro / rust-web-boilerplate

Update rocket_codegen requirement from 0.3 to 0.4 #19