Wings3D 2.2.9 Release

[dgud]

- Drag and drop file feature was not importing files with uppercase file
extensions. Thanks to rgcotl at Discord. [micheus]
- Fixed autouv crash in create_texture dialogs. [dgud]
- Fixed marquee transparency on Linux. Thanks to Klim. [micheus]
- Added zoom option to wings camera mode. [dgud]
- Fixed material dialog crash. [micheus]
- Updated geometry graph icons. [dgud]
- Fixed startup crash. [dgud]
- Fixed crash when creating menu. [dgud][/align]