3.17.0, 2023-09

This release focused mostly on code modernization, bug fixing, and performance improvements.

A full list on all issues and pull request handled in this release can be found here: https://github.com/eclipse/gef-classic/milestone/2?closed=1

The update site for this release can be found at: https://download.eclipse.org/tools/gef/classic/releases/3.17.0/

Many thanks to @BauePhil, @Destrolaric, @vogella, @pcdavid, @Phillipus, @ptziegler, @serge-rider, and @sebHollersbacher for your support.