Add a CHANGELOG.md file for 0.14.

Author: sunfishcode

CHANGELOG.md

@@ -0,0 +1,15 @@
+# origin 0.14
+
+## Changes
+
+`thread::create_thread` now requires the function arugment to implement `Send`,
+which reflects the fact that it is sent to the newly-created thread.
+
+## Features
+
+The "init-fini-arrays" feature now enables two sub-features, "init-arrays" and
+"fini-arrays" which can be enabled individually for use cases that only need one.
+
+A new "atomic-dbg-logger" feature uses the atomic-dbg packages `log` implementation,
+which is very minimal and not configurable, but which can print messages to stderr
+in more configurations.