Support adding multiple enum cases at once

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

Fixes an issue where updating a table to add multiple new enum cases would only add the last case to the database.

Fixes #189

Bump postgres-kit to 2.5.1

This patch was authored by @sketchmaster2001 and released by @0xTim.

postgres-kit has been updated to fix build conflicts with swift-nio. This bumps the postgres-kit version to fix build errors.

Make `DatabaseError.isConnectionClosed` functional

This patch was authored and released by @gwynne.

DatabaseError.isConnectionClosed now has the value true when the underlying error is PostgresError.connectionClosed.

Also avoids double-running the FluentBenchmark tests (same change as fluent-sqlite-driver#75) and actually runs the tests on Linux now.

Ensure SQLExpression executes are logged

This patch was authored and released by @0xTim.

Adds logging to calls to SQLDatabase.execute(sql:) to match the calls used by Fluent so queries such as raw queries are logged

Make SQL Log Level Configurable

This patch was authored and released by @0xTim.

Adds the option to set the log level at which SQL queries are logged. Defaults to .debug.

Log SQL of queries in when log level set to debug mode

This patch was authored and released by @0xTim.

Brings back logging when the log level is set to debug mode for queries. Will print the SQL and any binds depending on the queries being executed.

2.1.2

Update the Postgres NIO dependency to the correct version with the APIs Fluent Postgres Driver uses (#175 )

Use `PostgresConfiguration.ianaPortNumber` where possible

This patch was authored and released by @gwynne.

This is a follow-on from vapor/postgres-kit#201.

Support connection pool timeout configuration

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

Allows for configuration of connection pool timeouts (#161).

The connection pool timeout defines the maximum amount of time allowed for requesting a connection from the pool. This helps to prevent deadlock.

try app.databases.use(.postgres(
    configuration: ...,
    connectionPoolTimeout: .minutes(1)
), as: .psql)

The default timeout is 10 seconds.

FluentPostgresDriver 2.0.0

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