Inside the CommandPost DMG package is an uninstall application:
By running this Uninstall application it will remove everything related to CommandPost, including your Preferences and Settings.
If you have enabled "Enable Moving Markers", or changed the "Smart Collection Label" or "Backup Interval", you should change these settings back to their defaults prior to uninstalling CommandPost.
The CommandPost preferences are located at:
This file can also be dragged to the Trash to remove CommandPost’s Preferences.
Any user created Extensions, Plugins, Shortcuts or Tangent Settings are stored within:
These can be also be removed if required.
CommandPost's WebKit, Crashlytics & Sparkle caches are stored within:
These folders can also be removed if required.