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--- 2020-05-08 Release 7.30.8 ---
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* added gchecker tool to generate MGED overlap inputs - Cliff Yapp
* improved behavior of MGED overlap checker GUI - Nick Reed
* fixed startup dimensions of overlap checker window - Nick Reed
* fixed rtedge line drawing color when using -W flag - Cliff Yapp
* added -F option to lint cmd to test specifc solid types - Cliff Yapp
* added support to MGED for zooming with mouse wheel - Cliff Yapp
* fixed solid editing wireframe drawing in MGED - Nick Reed
* added .r suffixes to region names in 3dm-g conversion - Cliff Yapp
