message: Change Move Statements shortcut on Mac
  Fixes
diff: {
  "command": "abracadabra.moveStatementDown",
  "key": "alt+shift+d",
  - "mac": "cmd+shift+down",
  "when": "editorTextFocus"
  },
  {
  "command": "abracadabra.moveStatementUp",
  "key": "alt+shift+u",
  - "mac": "cmd+shift+up",
  "when": "editorTextFocus"
  }
  ],
  