prerelease version updates

Package.swift

@@ -8,25 +8,25 @@ let package = Package(
     ],
     dependencies: [
         // Swift Promises, Futures, and Streams.
-        .package(url: "https://github.com/vapor/async.git", .exact("1.0.0-beta.1")),
+        .package(url: "https://github.com/vapor/async.git", "1.0.0-beta.1"..<"1.0.0-beta.2"),
 
         // Core extensions, type-aliases, and functions that facilitate common tasks.
-        .package(url: "https://github.com/vapor/core.git", .exact("3.0.0-beta.1")),
+        .package(url: "https://github.com/vapor/core.git", "3.0.0-beta.1"..<"3.0.0-beta.2"),
 
         // Cryptography modules (formerly CryptoKitten)
-        .package(url: "https://github.com/vapor/crypto.git", .exact("3.0.0-beta.1")),
+        .package(url: "https://github.com/vapor/crypto.git", "3.0.0-beta.1"..<"3.0.0-beta.2"),
 
         // Core services for creating database integrations.
-        .package(url: "https://github.com/vapor/database-kit.git", .exact("1.0.0-beta.2")),
+        .package(url: "https://github.com/vapor/database-kit.git", "1.0.0-beta.2"..<"1.0.0-beta.3"),
 
         // Non-blocking networking for Swift (HTTP and WebSockets).
-        .package(url: "https://github.com/vapor/engine.git", .exact("3.0.0-beta.2")),
+        .package(url: "https://github.com/vapor/engine.git", "3.0.0-beta.2"..<"3.0.0-beta.3"),
 
         // Service container and configuration system.
-        .package(url: "https://github.com/vapor/service.git", .exact("1.0.0-beta.1")),
+        .package(url: "https://github.com/vapor/service.git", "1.0.0-beta.1"..<"1.0.0-beta.2"),
 
         // Pure Swift (POSIX) TCP and UDP non-blocking socket layer, with event-driven Server and Client.
-        .package(url: "https://github.com/vapor/sockets.git", .exact("3.0.0-beta.2")),
+        .package(url: "https://github.com/vapor/sockets.git", "3.0.0-beta.2"..<"3.0.0-beta.3"),
     ],
     targets: [
         .target(name: "PostgreSQL", dependencies: ["Async", "Bits", "Crypto", "DatabaseKit", "Service", "TCP"]),