MTDA 0.40

What's Changed

• debian: open development window for version 0.40 by @chombourger in #494
• fix(debian): drop unused mtda-wwww.install by @baprusty in #496
• feat(www): re-introduce the virtual keyboard by @chombourger in #497
• fix(keyboard): fix special keys issue in www by @shikl3x7 in #499
• fix(keyboard): fix space key issue in www by @shikl3x7 in #500
• fix(www): make the video stream fit its window without scrollbars by @chombourger in #503
• debian: changelog for version 0.40 by @chombourger in #502

Full Changelog: v0.39...v0.40