Fix conditional Codable conformance

This patch was authored and released by @siemensikkema.

This fixes an issue introduced in vapor/fluent-kit#435 where Page does not automatically conform to Codable anymore (#730)

Add page size limit

This patch was authored by @pulpn0ir and released by @siemensikkema.

Adds a means to prevent server overloads by limiting the maximum amount of elements returned in a single page.

Application and Request have been extended with setters for page size limits. Set limits using the newly introduced PageLimit type.

// Set page size limit for the current request. Default is `nil`, which means no limit. 
request.fluent.pagination.pageSizeLimit = 3

// Setting the request-level limit to `nil` will cause the application-level limit to be used instead. 
request.fluent.pagination.pageSizeLimit = nil

// Use `.noLimit` if you intend to override a limit set on application level. 
request.fluent.pagination.pageSizeLimit = .noLimit

// Set application-wide page size limit. Default is `nil`, which means no limit. 
application.fluent.pagination.pageSizeLimit = 3

This PR depends on: vapor/fluent-kit#412

Add cache protocol

This patch was authored and released by @tanner0101.

Add Fluent implementation for Vapor's new cache protocol: vapor/vapor#2558

app.caches.use(.fluent)
// Or with specific database id
app.caches.use(.fluent(.foo))

Make sure to add the CacheEntry migration (similar to SessionRecord).

app.migrations.add(CacheEntry.migration)

Add default implementation for CredentialsAuthenticatable

This patch was authored and released by @0xTim.

Improves the experience for users writing web applications. Adds a ModelCredentialsAuthenticator to automatically conform Model types to CredentialsAuthenticatable and provide a middleware to use.

This can be used when logging in users via a web form, as shown in the tests. This also backfills some tests for ModelSessionAuthenticatable.

Also fixes a bug where the SessionAuthenticator was not using the provided DatabaseID

Resolves #710
Resolves #701

Docs here vapor/docs#576

Fluent 4.0.0

Docs:
https://docs.vapor.codes/4.0/fluent/overview/
https://docs.vapor.codes/4.0/fluent/model/
https://docs.vapor.codes/4.0/fluent/relations/
https://docs.vapor.codes/4.0/fluent/migration/
https://docs.vapor.codes/4.0/fluent/query/
https://docs.vapor.codes/4.0/fluent/schema/
https://docs.vapor.codes/4.0/fluent/advanced/

More information on Vapor 4 official release:
https://forums.swift.org/t/vapor-4-official-release-begins/34802

Adds the ability to retrieve query history

This patch was authored and released by @mcdappdev.

Tracks database query history for a Request or Application (#689).

To use on the Application:

app.fluent.history.start()
app.fluent.history.stop()
app.fluent.history.clear()

Access the history by calling:

app.fluent.history.queries

The same methods/properties exist on Request:

req.fluent.history.start()
req.fluent.history.stop()
req.fluent.history.clear()
req.fluent.history

FluentKit 1.0.0 GM

This patch was authored and released by @tanner0101.

Updates this package for compatibility with latest version of FluentKit.

Add unique index to SessionRecord key

This patch was authored by @SusanDoggie and released by @tanner0101.

Adds a unique index to SessionRecord.key to improve data integrity and key lookup performance (#680).

⚠️ If you have already added the SessionRecord migration in production, you will need to add this unique index manually.

Fix deprecated renamed fix for ModelTokenAuthenticatable

This patch was authored by @0xTim and released by @tanner0101.

Fixes incorrect rename deprecation for ModelTokenAuthenticatable (#677).

Update to Vapor 4 GM

This patch was authored and released by @tanner0101.

Updated for final Vapor 4.0.0 release (#672).

• ModelUser renamed to ModelAuthenticatable.
• ModelUserToken renamed to ModelTokenAuthenticatable.
• Sessions authenticator now creatable via static method.

- app.fluent.sessions.middleware()
+ User.sessionAuthenticator()

• New ModelSessionAuthenticatable helper protocol added.
• Session renamed to SessionRecord. Now uses _fluent_sessions schema.