Add dotfiles from home directory

Tracks shell configs (zsh/bash), vim, tmux, irssi, fonts, themes,
and ~/.local/bin scripts. Sensitive files (.ssh, .gnupg, history,
credentials) and large app data are excluded via .gitignore.

.xmodmap

@@ -0,0 +1,30 @@
+!
+! based on: http://www.emacswiki.org/emacs/SwapControlAltAndCapsLock#toc8
+! also based on: http://askubuntu.com/questions/93624/how-do-i-swap-left-ctrl-with-left-alt-on-my-keyboard
+!
+
+! Swap Control and Alt keys, both sides:
+
+! First clear all modifiers & control
+clear control
+clear mod1
+clear mod4
+
+! Swap Control_L and Alt_L
+keycode  64 = Control_L
+keycode  37 = Alt_L Meta_L
+
+! Menu becomes Alt_R Meta_R (AltGr)
+! keycode 135 = Alt_R Meta_R
+
+! Define Control_R and Alt_R similar to Control_L and Alt_L
+keycode 108 = Control_L
+keycode 105 = Alt_L Meta_L
+
+! We need to set keycodes first, as some programs (emacs!) read
+! the key names and seem to ignore what's below.
+add mod1    = Alt_L Alt_R Meta_L Meta_R
+add mod4    = Super_L Super_R
+add control = Control_L Control_R
+
+