release version 1.6.0 v1.6.0

fix missing color adaption for headings on about page - relates to #730

add support for dark mode - resolves #730

merge all stylesheets into one

add automatic linking of referenced issues - resolves #808

replaced edit icon Unicode char with an SVG icon - fixes #805

(0) -300 -100 -30 -10 -6 tip

mercurial