Opensesame-plugin-parallel-port-trigger

Final release for OpenSesame 3 API

- small bugfixes

Cleaned .pyc files

- fixed: dummy mode was always enabled
- dummy mode is now chosen in the first occurrence of the item
- dummy mode now works properly when there is no parallel port and/or driver

- Fixed exception handling and import error
- updated documentation, removal of duration

- Opensesame 3 Style
- Switch based

- new plugin code style
- debian packaging fixed