* Remove duplicate title
Removed duplicate release title from the markdown file.
* remove double header
* remove double header
* remove double header
* remove double header
* remove double header
* remove double header
* remove double header
* Fix documentation links for part parameters
Updated links in documentation for part parameter units and part parameters.
* New pages
* Update list
* Update release notes for version 1.2.0
Added API changes section and improved clarity on contributing guidelines.
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Co-authored-by: Matthias Mair <code@mjmair.com>