bump changelog for 0.3.0 release

mratsim · mratsim · commit bf2ec2ff5172 · 2020-01-01T13:23:42.000+01:00
diff --git a/changelog.md b/changelog.md
@@ -1,6 +1,8 @@
 # Changelog
 
-### v0.3.0 - unreleased
+### v0.x.x - Unreleased
+
+### v0.3.0 - January 2020
 
 `sync(Weave)` has been renamed `syncRoot(Weave)` to highlight that it is only valid on the root task in the main thread. In particular, a procedure that uses syncRoot should not be called be in a multithreaded section. This is a breaking change. In the future such changes will have a deprecation path but the library is only 2 weeks old at the moment.
 
