This is my Hammerspoon configuration.

I swapped my caps lock key with ctrl using OS X keyboard preferences, then used Karabiner-Elements to make caps lock (which is the ctrl physical key) key to F19 (a key that doesn't exist on my keyboard but has a keycode) then through hammerspoon I make a modal key that acts like a hyper key.

Keybinding List

Application Focus Keys

Key	Description
ctrl+j	Focus Google Chrome
ctrl+k	Focus Emacs
ctrl+l	Focus Terminal.app
ctrl+u	Focus Dash
crtl+8	Set the current window to ctrl+i
ctrl+i	Focus the window set by ctrl+8
ctrl+h	Show window hints

Layouts Keys

Key	Description
ctrl+a	Set the current app to left layout (used for browing)
ctrl+s	Set the current app to big window in the middle layout
ctrl+d	Set the current app to right layout (used for coding)
ctrl+w	Set the current app to be as tall as possible while leaving 20px of padding area
ctrl+t	Set the current app to iTunes MiniPlayer layout
ctrl+f	Set the current app to be 600x620px
ctrl+r	Set the current app to be 600x500px
ctrl+c	Move the current app to the center
ctrl+v	Move the current app to horizontal center but 20% from top
ctrl+z	Undo

Movement Between Displays Keys

Key	Description
ctrl+1	Move to main display
ctrl+2	Move to the second display

Miscellaneous Keys

key	Description
ctrl+backspace	Start Screensaver