- IMPROVMENT: added to use transient cache
- IMPROVMENT: added thumbnail width (height depent of theme thumbnail)
- IMPROVMENT: added prevent some options if active theme dosen’t support it
- IMPROVMENT: added activation & deactivation hooks (to setup defaults and remove config )
- BUGFIX: remove all filters the_content for post in upPrev box
- BUGFIX: fixed display upPrev box in case of an equal height of the window and the document