Prepare release spire-api 0.4.0 (#213)

Signed-off-by: Max Lambrecht <[email protected]>

Author: maxlambrecht

spire-api/CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## [0.4.0] – 2025-12-26
+
+### Changed
+
+* Updated dependency to `spiffe` v0.8 with `grpc` enabled.
+* Replaced custom Unix domain socket connector with `spiffe::Endpoint` and the shared gRPC connector.
+* Updated `DelegatedIdentityClient` methods to take `&self` instead of `&mut self`.
+
+### Added
+
+* New client constructors: `connect_env()`, `connect_to(...)`, and `connect(Endpoint)`.
+
+### Removed
+
+* Removed custom transport plumbing and unused dependencies (`tower`, `hyper-util`).
+* Dropped direct socket-path parsing in favor of typed endpoint parsing.
+
+
 ## [0.3.9] – 2025-12-24
 
 * Migrated to the Rust 2021 edition.

spire-api/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "spire-api"
-version = "0.3.9"
+version = "0.4.0"
 edition = "2021"
 rust-version = "1.83"
 authors = ["Max Lambrecht <[email protected]>"]

spire-api/README.md

@@ -31,7 +31,7 @@ Add `spire-api` to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-spire-api = "0.3.9"
+spire-api = "0.4.0"
 ````
 
 ---
@@ -44,7 +44,7 @@ Fetch a delegated X.509 SVID using selector-based attestation:
 use spire_api::DelegatedIdentityClient;
 use spire_api::selectors;
 
-let client = DelegatedIdentityClient::default().await?;
+let client = DelegatedIdentityClient::connect_env().await?;
 
 let x509_svid = client
     .fetch_x509_svid(spire_api::DelegateAttestationRequest::Selectors(vec![