Log Message:
wm/marswm: update to 0.5.1

 - Fixing windows getting lost when switching off their monitor
 - Fixing windows staying hidden on monitor disconnect
 - Bump dependencies
 - Improving language quality
 - Adding keybinding to increase/decrease gap size
 - Fixing overflow issues with unreasonably huge gaps in layouts.rs
 - Fixing Level3 modifier being wrongfully bound
 - Fixing client decoration on workspace switching
 - Warping pointer on window activation
 - Fixing restacking on floating layout
 - Allow dialogs to be resized by their programs
 - Allow moving fullscreen windows with the mouse
 - Fixing crash on move_main
 - Fixing moving of fullscreen windows between monitors
 - Fixing bug with previous fix regarding move_main
 - Prefer fullscreen windows when focusing after switching workspace