Release v0.4.0

This release contains some fixes for the CI as well as the CODEOWNERS
file. It fixes the implementation of get_iova_range() for vDPA, and
finally it implements its own version of the VhostKernBackend::valid()
method for vDPA.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

CHANGELOG.md

@@ -9,6 +9,16 @@
 
 ### Deprecated
 
+## [v0.4.0]
+
+### Added
+- [[#109]](https://github.com/rust-vmm/vhost/pull/109) vhost_kern: vdpa: Override the implementation of valid()
+
+### Fixed
+- [[#102]](https://github.com/rust-vmm/vhost/pull/102) Fix warnings and update test coverage
+- [[#104]](https://github.com/rust-vmm/vhost/pull/104) fix CODEOWNERS file
+- [[#107]](https://github.com/rust-vmm/vhost/pull/107) vhost_kern/vdpa: fix get_iova_range()
+
 ## [v0.3.0]
 
 ### Added

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "vhost"
-version = "0.3.0"
+version = "0.4.0"
 keywords = ["vhost", "vhost-user", "virtio", "vdpa"]
 description = "a pure rust library for vdpa, vhost and vhost-user"
 authors = ["Liu Jiang <gerry@linux.alibaba.com>"]