feat: release 2.0.4.1

Include changelog and license files.

Author: onyn

CHANGELOG.md

@@ -0,0 +1,13 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [2.0.4.1] - 2022-12-15
+
+- Sources of `me.botsko:elixr` dependency included into repository. Since original maven repository was down.
+- Make project buildable.
+- Speedup mysql batch inserts.
+- Remove warnings about SSL when connecting to mysql.
+- Fix mysql connection leaks.
+- Disable `RemoveAbandoned` mysql setting. It harms when database has lots of data and query
+  lasts too long thus triggering unwanted connection closing.