0.3.0

This release adds significant new functionality and also contains many breaking changes. Big thanks to @amomchilov for all of the work he contributed to this release.

New functionality

• XPC services: create a server with XPCServer.forThisXPCService() and communicate with it using XPCClient.forXPCService(named:).
• Anonymous XPC: useful for testing and some advanced multiprocess communication scenarios.
• Swift concurrency: await sends from the client and register async routes with the server side (available on macOS 10.15 and later).
• A server's dispatch queue can now be set.
• Endpoints can be retrieved for anonymous and XPC Mach servers, optionally sent over another XPC connection, and used to create clients.
• Anonymous and XPC Mach servers can be started in a non-blocking manner.
• Improved error types and messages.

Changes

• XPC Mach servers are now retrieved with XPCServer.forThisBlessedHelperTool() or XPCServer.forThisMachService(named:clientRequirements:).
• To start a server in a blocking manner, use startAndBlock(). start() now starts the server and then returns.
• XPC Mach clients are now retrieved with XPCClient.forMachService(named:).
• The client's send and sendMessage functions which do not receive a reply must now either provide an onCompletion handler or explicitly pass in nil to indicate they do not want to be informed of completion or any errors.
• The clients send and sendMessage functions which receive a reply have had their withReply parameter renamed to withResponse.
• The client's send and sendMessage functions no longer throw; all errors are passed to either the onCompletion or withResponse handler.
• Routes are now constructed with a builder pattern, for example: XPCRoute.named("bedazzle").withMessageType(String.self).withReplyType(Bool.self)

Other additions

• Over 100 tests have been added.