What's Changed
* Gdml update by ebrianne in https://github.com/brettviren/gegede/pull/3
* could we add "copynumber"? by bingguo1 in https://github.com/brettviren/gegede/pull/4
* DUNE ND adds elliptical tube by brettviren in https://github.com/brettviren/gegede/pull/12
* Fix gdml_solids.xsd with duplicate element description by ClarkMcGrew in https://github.com/brettviren/gegede/pull/13
* feature/Add Material Properties by ClarkMcGrew in https://github.com/brettviren/gegede/pull/14
New Contributors
* ebrianne made their first contribution in https://github.com/brettviren/gegede/pull/3
* bingguo1 made their first contribution in https://github.com/brettviren/gegede/pull/4
* brettviren made their first contribution in https://github.com/brettviren/gegede/pull/12
* ClarkMcGrew made their first contribution in https://github.com/brettviren/gegede/pull/13
**Full Changelog**: https://github.com/brettviren/gegede/compare/0.6...0.7