CHANGELOG: release v1.0.0

Signed-off-by: Matt Layher <mdlayher@gmail.com>

CHANGELOG.md

@@ -1,3 +1,11 @@
 # CHANGELOG
 
 ## Unreleased
+
+## v1.0.0
+
+- Initial stable commit! The API is mostly a direct translation of the previous
+  `github.com/mdlayher/raw` package APIs, with some updates to make everything
+  focused explicitly on Linux and `AF_PACKET` sockets. Functionally, the two
+  packages are equivalent, and `*raw.Conn` is now backed by `*packet.Conn` in
+  the latest version of the `raw` package.

README.md

@@ -13,3 +13,21 @@ Go 1.12+. Older versions of Go lack critical features and APIs which are
 necessary for this package to function correctly.
 
 **If you depend on this package in your applications, please use Go modules.**
+
+## History
+
+One of my first major Go networking projects was
+[`github.com/mdlayher/raw`](https://github.com/mdlayher/raw), which provided
+access to Linux `AF_PACKET` sockets and *BSD equivalent mechanisms for sending
+and receiving Ethernet frames. However, the *BSD support languished and I lack
+the expertise and time to properly maintain code for operating systems I do not
+use on a daily basis.
+
+Package `packet` is a successor to package `raw`, but exclusively focused on
+Linux and `AF_PACKET` sockets. The APIs are nearly identical, but with a few
+changes which take into account some of the lessons learned while working on
+`raw`.
+
+Users are highly encouraged to migrate any existing Linux uses of `raw` to
+package `packet` instead. This package will be supported for the foreseeable
+future and will receive continued updates as necessary.