Added PaperWM .config/ dotfiles. Refer to my fork of PaperWM (https://github.com/jtaala/PaperWM).

paperwm/metadata.json

+{
+  "uuid": "paperwm@hedning:matrix.org",
+  "name": "PaperWM",
+  "description": "Tiling window manager with a twist",
+  "url": "https://github.com/paperwm/PaperWM",
+  "settings-schema": "org.gnome.Shell.Extensions.PaperWM",
+  "shell-version": [ "42", "43" ],
+  "version": "43.0",
+  "session-modes":  [ "unlock-dialog", "user" ]
+}

paperwm/user.css

+.paperwm-selection {
+    border-color: #d64161;
+    background-color: #d64161;
+}
+
+.paperwm-minimap-selection {
+    border-color: #d64161;
+}
\ No newline at end of file

paperwm/user.js

+// -*- mode: gnome-shell -*-
+
+var Meta = imports.gi.Meta;
+var Clutter = imports.gi.Clutter;
+var St = imports.gi.St;
+var Main = imports.ui.main;
+var Shell = imports.gi.Shell;
+
+// Extension local imports
+var Extension, Me, Tiling, Utils, App, Keybindings, Examples;
+
+function init() {
+    // Runs _only_ once on startup
+
+    // Initialize extension imports here to make gnome-shell-reload work
+    Extension = imports.misc.extensionUtils.getCurrentExtension();
+    Me = Extension.imports.user;
+    Tiling = Extension.imports.tiling;
+    Utils = Extension.imports.utils;
+    Keybindings = Extension.imports.keybindings;
+    Examples = Extension.imports.examples;
+    App = Extension.imports.app;
+
+    Tiling.defwinprop({
+        wm_class: "mpv",
+        scratch_layer: true,
+    });
+    Tiling.defwinprop({
+        wm_class: /gnome-terminal/i,
+        preferredWidth: "50%",
+    });
+    Tiling.defwinprop({
+        wm_class: /xfce4-terminal/i,
+        preferredWidth: "50%",
+    });
+    Tiling.defwinprop({
+        wm_class: /alacritty/i,
+        preferredWidth: "50%",
+    });
+}
+
+function enable() {
+    // Runs on extension reloads, eg. when unlocking the session
+}
+
+function disable() {
+    // Runs on extension reloads eg. when locking the session (`<super>L).
+}
+