Release 1.5.2

Release 1.5.2 is a bug-fix release

Bug fixes

• Parametrized response writer to support HTTP API V2 proxy model that requires the single-value headers map to be populated (#377)
• Changed the base64 encoder for binary data in the response writer to the default encoder not the MIME encoder (#339)

Dependencies

• Bumped Spring version to 5.2.9 to address CVE (#380, thank you @jabhijeet!)