Mutiple bugfixes#3

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jimmyvanbroeck wants to merge 4 commits intopnitsch:masterfrom

jimmyvanbroeck:master

Commits on Feb 13, 2014

* Added Function keys support

jvanbroe
authored and
jvanbroe
committed
Added keydown event for support Function keys and other special keys.

jvanbroe
authored and
jvanbroe
committed

Commits on Jun 27, 2014

Added Cursor blinking on screen
Jimmy Van Broeck
committed

Commits on Jul 17, 2014

Fixed bug with cursor Down and clearing of display when bottom margin and/or top margin was set.
Jimmy Van Broeck
committed