terminal isn't growing unlimited anymore, when is max height is reached, there will be a scroll bar
nice scrollbars for webkit/blink browsers
it's not possible to travers the history with the up and down keys
some code improvements
removed label/title
replaceable initializationHandler
im importance is undefined it is set to "system"
empty lines are now visible
set line height to min-height, and set a new max-height for the output