Swift 5.1 is minimum supported in CI. This package still compiles with Swift 5.0

Updates package references and version dependencies for community Kitura project

Support Swift 5

This release includes:

• A fix that ensures string parameters passed to the database are in the ocrrect format and terminated correctly
• A fix to release internal prepared statements preventing a memory leak
• A fix to ensure that database connections are closed if not done so explicitly.

Swift-Kuery-PostgreSQL 2.0.0 includes the following updates:

• Conformance to Swift-Kuery 3.0 protocols
• Asynchronous API behavior
• Bug fixes (See commit history)

The release contains breaking API and behavior changes.

For further details please see the Swift-Kuery MigrationGuide

• Handle Mixed Casing
• Update Swift-Kuery to 2.0.0

Notes

The upgrade to Swift-Kuery 2.0.0 introduces a behavior change within the postgreSQL plugin regarding mixed case identifiers. Please see the Swift-Kuery 2.0.0 release notes for further detail.

• Add UUID case to QueryBuilder

• Fix the isConnected property to check the PQstatus of the underlying connection (#49)

relaxed the check for creating a connection from a URL so that when it looks for "Postgres" for the scheme it is not case sensitive and will accept "postgres"

• fix: Return id AS id (#43)
• fixed a memory leak caused by PQprepare (#40)
• Permit reuse of connection within result callback (#45)