v1.6.6

Public release .NET DllExport 1.6.6

* NOTE: Please don't forget to test latest 1.7 BETA releases (not for production)
        with .NET Core support!
        https://github.com/3F/DllExport

* FIXED: Fixed possible duplication of `PlatformTarget` during setup.

* FIXED: Fixed error when switching between .sln in UI. Wizard.

* FIXED: DllExport crashing with proxy authentication error. Issue #133.

* FIXED: Fixed actions for `-mgr-up` key.
         Including `-action Upgrade` ( Update + mgr-up + force keys )

* FIXED: Fixes possible MSB1006 for proxycfg property.
         "MSB1006: Property is not valid. Switch: proxycfg"

* CHANGED: Updated MvsSln 2.5
           https://github.com/3F/MvsSln/releases/tag/2.5

* CHANGED: Updated Mono Cecil 0.11.1
           https://github.com/jbevain/cecil/releases/tag/0.11.1

* CHANGED: Updated GetNuTool 1.8
           https://github.com/3F/GetNuTool/releases/tag/1.8

* CHANGED: Updated Conari 1.4
           https://github.com/3F/Conari/releases/tag/1.4