Update crate version and changelog for release 0.4.0 (#67)

* Update crate version and changelog for release
* Add changelog entry for updating SVD

CHANGELOG.md

@@ -7,9 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] [Crates.io](https://crates.io/crates/rp2040-pac/0.4.0) [Github](https://github.com/rp-rs/rp2040-pac/releases/tag/v0.4.0)
+
 - Added all possible variants for DREQ enum in CH*_CTRL*
 - Update rustdoc to clarify DMA CHAIN_TO behaviour
 - Add 6 unused interrupts as sw[0..5]_irq under new SW_IRQ peripheral
+- Pin to specific svdtools to avoid spontaneous breakage
+- Disable clippy warning for derive_partial_eq_without_eq
+- Update to SVD from pico-sdk 1.4.0
 
 ## [0.3.0] [Crates.io](https://crates.io/crates/rp2040-pac/0.3.0) [Github](https://github.com/rp-rs/rp2040-pac/releases/tag/v0.3.0)
 

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rp2040-pac"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["The RP-RS team"]
 edition = "2018"
 homepage = "https://github.com/rp-rs/rp2040-pac"