less: bump to 685

less: bump to 685

Remove maintainer.
Update copyright date.

Changelog: https://greenwoodsoftware.com/less/news.663.html
Changelog: https://greenwoodsoftware.com/less/news.665.html
Changelog: https://greenwoodsoftware.com/less/news.666.html
Changelog: https://greenwoodsoftware.com/less/news.667.html
Changelog: https://greenwoodsoftware.com/less/news.668.html
Changelog: https://greenwoodsoftware.com/less/news.674.html
Changelog: https://greenwoodsoftware.com/less/news.676.html
Changelog: https://greenwoodsoftware.com/less/news.678.html
Changelog: https://greenwoodsoftware.com/less/news.679.html
Changelog: https://greenwoodsoftware.com/less/news.683.html
Changelog: https://greenwoodsoftware.com/less/news.684.html
Changelog: https://greenwoodsoftware.com/less/news.685.html
Signed-off-by: George Sapkin <[email protected]>