allow independent database connections in PostgresStORM

[ccounterman]

I wanted to use Postgres-StORM for my web project, and also use Perfect-Turnstile-PostgreSQL for authentication. But I don't want them to use the same Postgres servers.

I used the SQLite StORM implementation as a model and added this code. It works for my needs now.

But I haven't figured out how to substitute my fork for yours, except by modifying the Xcode project.
I don't know how to get the dependencies adjusted. Here's my Package.swift:

import PackageDescription
let package = Package(
name: "temppgts",
targets: [],
dependencies: [
.Package(url: "https://github.com/PerfectlySoft/Perfect-HTTPServer.git", majorVersion: 2),
.Package(url: "https://github.com/PerfectlySoft/Perfect-Turnstile-PostgreSQL.git", majorVersion: 1),
.Package(url: "https://github.com/ccounterman/Postgres-StORM.git", majorVersion: 1),
.Package(url: "https://github.com/PerfectlySoft/Perfect-Mustache.git", majorVersion: 2),
.Package(url: "https://github.com/PerfectlySoft/Perfect-RequestLogger.git", majorVersion: 1),
]
)

It'd be good to either have such multiple connector support added to Postgres, or to know how to substitute my implementation in my project.