--- v1.6
added support for source-code title
added support for TAP

--- v1.5.1
something went wrong during upload, so we are forced to use a new version number

--- v1.5
added support for typescript

--- v1.4
replace "&nbsp;" with space in input

--- v1.3
validate user- and ckeditor's inputs
filter out invalid input characters

--- v1.2
added support for ckeditor 4.1 advanced content filter
added support for several new brush-modes
added possibility to change all default settings by config
