Preparing for 5.0.1 release

Author: Jason Weiss

notes/5.0.1.markdown

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+## CSW - TMT Common Software v5.0.1
+
+This is release v5.0.1 of the TMT Common Software.
+
+See [CHANGELOG.md](CHANGELOG.md) for details of all releases.
+
+
+### Documentation
+- Reference paradox documentation: https://tmtsoftware.github.io/csw/5.0.1/
+- Scaladoc: https://tmtsoftware.github.io/csw/5.0.1/api/scala/index.html
+- Javadoc: https://tmtsoftware.github.io/csw/5.0.1/api/java/index.html