Massive configuration overhaul

Currently paying the price of months of non-diligent git usage.

Here's what has changed.

- Theming support in Gvcci and wpgtk
- Dropping support for i3
- Supporting EXWM
- Many Elisp modules
- Collapsed redundant directories in ./configs

configs/shared/.config/compton.conf

@@ -0,0 +1,33 @@
+# shadow
+shadow = false;
+shadow-radius = 7;
+shadow-offset-x = -7;
+shadow-offset-y = -7;
+
+# TODO: Remove active opacity
+
+# opacity
+menu-opacity = 0.8;
+inactive-opacity = 0.96;
+active-opacity = 0.96;
+
+# transitions
+fading = true;
+fade-in-step = 0.07;
+fade-out-step = 0.07;
+
+# lock screen
+# NOTE: Need this rule here because I set XSECURELOCK_NO_COMPOSITE=1 in
+# ~/.profile. Without this, the lock screen will adopt the opacity settings
+# above, which is a security risk if you lock your screen while it has sensitive
+# content on it.
+#
+# NOTE: For some reason, `100:class_g` doesn't work, so settling for
+# `99:class_g` instead.
+opacity-rule = [
+  "99:class_g = 'xsecurelock'",
+  # TODO: Ensure this works.
+  "80:class_g = 'terminator'",
+  # TODO: Ensure this work.
+  "80:class_g = 'Google Emacs'"
+];