Changelog for 0.1.0 release! (#107)

Signed-off-by: Dan Lorenc <[email protected]>

.github/workflows/build.yaml

@@ -2,7 +2,6 @@ name: CI-Build
 
 # Run this workflow every time a new commit pushed to your repository
 on:
-  pull_request:
   push:
     branches:
       - main

CHANGELOG.md

@@ -0,0 +1,35 @@
+# Changelog
+
+## v0.1.0
+
+This is the first release of `cosign`!
+
+The main goal of this release is to release something we can start using to sign other releases of [sigstore](sigstore.dev) projects, including `cosign` itself.
+
+We expect many flags, commands, and formats to change going forward.
+No backwards compatiblity is promised or implied.
+
+### Enhancements
+
+This release added a feature to `cosign` called `cosign`.
+The `cosign` feature can be used to sign container images and blobs.
+Detailed documentation can be found in the [README](README.md) and the [Detailed Usage](USAGE.md).
+
+### Bug Fixes
+
+There was no way to sign container images. Now there is!
+
+### Contributors
+
+We would love to thank the contributors:
+
+* dlorenc
+* priyawadhwa
+* Ahmet Alp Balkan
+* Ivan Font
+* Jason Hall
+* Chris Norman
+* Jon Johnson
+* Kim Lewandowski
+* Luke Hinds
+* Bob Callaway