Dexpot 1.5.18

# Features
* Display Dual Monitor Taskbar on all desktops
* This last build of Dexpot 1.5 accepts 1.6 Pro license keys
# Bugs
* Fixed a problem that occured when aborting a desktop switch to a password-protected desktop
* Fixed gathering windows while moving windows in Desktop Preview
* Plugins are no longer loaded automatically on incompatible Windows versions
* Desktop Manager sometimes displayed wrong icons with 'Show icons of active windows' enabled
* Fixed problem with "no windows" line missing from empty desktops' menus in Desktop Manager