If you have not already, try out the free 14 day trial of Floatifications
(https://play.google.com/store/apps/details?id=robj.floating.notifications)

The trial will give you a full 14 days to get to grips with everything Floatifications has to offer. Once your ready, this unlocker will give you unlimited access to the full Floatifications experience!!

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Themes
Themes for FN can be found both on the Play Store (search "FN Theme") or on XDA (http://forum.xda-developers.com/showthread.php?t=2283623)

Any issues, requests or suggestions?
Follow us on Twitter (@FNforAndroid)
Like us on Facebook (https://www.facebook.com/floatingnotifications)
Circle us on Google Plus (http://gplus.to/chatheads)
Get beta access by joining the community (http://gplus.to/fnbeta)
Or email us at [email protected]

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App issues?
Please see the application page (https://play.google.com/store/apps/details?id=robj.floating.notifications) for known issues or bugs. If that doesn't help, get in touch :)

Dev's
The extension library and wiki can be found here:
https://code.google.com/p/fn-extensions-library/

Recent changes:
Version 1.5
- Added Lollipop (5.1) compatibility