New Atom Pane Commands

new-pane-commands.js

// Existing commands that used to be 'pane:split-*'
'pane:split-left-and-copy-active-item'
'pane:split-right-and-copy-active-item'
'pane:split-up-and-copy-active-item'
'pane:split-down-and-copy-active-item'

// New commands to create splits
'pane:split-left'
'pane:split-right'
'pane:split-up'
'pane:split-down'

'pane:split-left-and-move-active-item'
'pane:split-right-and-move-active-item'
'pane:split-up-and-move-active-item'
'pane:split-down-and-move-active-item'

// New commands to manage pane items in splits
'window:move-active-item-to-pane-above'
'window:move-active-item-to-pane-below'
'window:move-active-item-to-pane-on-left'
'window:move-active-item-to-pane-on-right'

'window:copy-active-item-to-pane-above'
'window:copy-active-item-to-pane-below'
'window:copy-active-item-to-pane-on-left'
'window:copy-active-item-to-pane-on-right'

sample-keybinds.cson

# For OS X
'.platform-darwin':
  # Create an empty split pane
  'cmd-k left':  'pane:split-left'
  'cmd-k right': 'pane:split-right'
  'cmd-k up':    'pane:split-up'
  'cmd-k down':  'pane:split-down'

  # Create a split pane with the current pane item moved into it
  'cmd-k m left':  'pane:split-left-and-move-active-item'
  'cmd-k m right': 'pane:split-right-and-move-active-item'
  'cmd-k m up':    'pane:split-up-and-move-active-item'
  'cmd-k m down':  'pane:split-down-and-move-active-item'

  # Create a split pane with the current pane item duplicated
  'cmd-k d left':  'pane:split-left-and-copy-active-item'
  'cmd-k d right': 'pane:split-right-and-copy-active-item'
  'cmd-k d up':    'pane:split-up-and-copy-active-item'
  'cmd-k d down':  'pane:split-down-and-copy-active-item'

  # Move the current pane item to the target split pane
  'cmd-ctrl-shift-left':  'window:move-active-item-to-pane-on-left'
  'cmd-ctrl-shift-right': 'window:move-active-item-to-pane-on-right'
  'cmd-ctrl-shift-up':    'window:move-active-item-to-pane-above'
  'cmd-ctrl-shift-down':  'window:move-active-item-to-pane-below'

# For Windows and Linux
'.platform-win32, .platform-linux':
  # Create an empty split pane
  'ctrl-k left':  'pane:split-left'
  'ctrl-k right': 'pane:split-right'
  'ctrl-k up':    'pane:split-up'
  'ctrl-k down':  'pane:split-down'

  # Create a split pane with the current pane item moved into it
  'ctrl-k m left':  'pane:split-left-and-move-active-item'
  'ctrl-k m right': 'pane:split-right-and-move-active-item'
  'ctrl-k m up':    'pane:split-up-and-move-active-item'
  'ctrl-k m down':  'pane:split-down-and-move-active-item'

  # Create a split pane with the current pane item duplicated
  'ctrl-k d left':  'pane:split-left-and-copy-active-item'
  'ctrl-k d right': 'pane:split-right-and-copy-active-item'
  'ctrl-k d up':    'pane:split-up-and-copy-active-item'
  'ctrl-k d down':  'pane:split-down-and-copy-active-item'

  # Move the current pane item to the target split pane
  'alt-ctrl-shift-left':  'window:move-active-item-to-pane-on-left'
  'alt-ctrl-shift-right': 'window:move-active-item-to-pane-on-right'
  'alt-ctrl-shift-up':    'window:move-active-item-to-pane-above'
  'alt-ctrl-shift-down':  'window:move-active-item-to-pane-below'

In Ubuntu alt-ctrl-shift will move a window to another workspace.

Great!! I like especially sending pane item to adjacent pane feature like window:move-active-item-to-pane-on-left.