pg_extra_time changelog / release notes

All notable changes to the pg_extra_time PostgreSQL extension will be documented in this changelog.

The format of this changelog is based on Keep a Changelog. pg_extra_time adheres to semantic versioning.

This changelog is automatically generated and is updated by running make CHANGELOG.md. This preamble is kept in CHANGELOG.preamble.md and the remainded of the changelog below is synthesized (by sql-to-changelog.md.sql) from special comments in the extension update scripts, put in the right sequence with the help of the pg_extension_update_paths() functions (meaning that the extension update script must be installed where Postgres can find them before an up-to-date CHANGELOG.md file can be generated).