fixed #13
fixed #14
fixed #15
Merge branch 'bug/13_blurry_lines' into dev
Merge branch 'bug/14-small-lines' into dev
Merge branch 'bug/15-flaechen-annotations' into dev
fixed #16
Merge branch 'bug/16-wrong-scale-feb' into dev
fixed #17
Merge branch 'feature/17-100-interval-for-scales' into dev
#17 fixed imports