v0.4.8

Added

• Capability to create zome call signing credentials with the AdminWebsocket using authorize_signing_credentials.
• ClientAgentSigner type which can store (in memory) signing credentials created with authorize_signing_credentials.
• AppAgentWebsocket to simplify making zome calls. It is a wrapper around a AppWebsocket but can be created directly.

Removed

• The utilities crate, it is now replaced by signing built into the client. Please see the updated tests for examples of how to use this.