open-source-silicon.dev

<https://github.com/IHP-GmbH/IHP-Open-PDK/pull/354|#354 Xschem npn13G2v symbols updated >
Pull request opened by <https://github.com/KrzysztofHerman|KrzysztofHerman>
npn13G2v symbols updated in order to support `El` parameter. Also DRC rules updates for xschem
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>

<https://github.com/IHP-GmbH/IHP-Open-PDK/pull/354|#354 Xschem npn13G2v symbols updated >
Pull request merged by <https://github.com/sergeiandreyev|sergeiandreyev>
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>