* add new addOptions option
* replace defaultOptions with addOptions for all extensions
* replace defaultOptions with addOptions for all demos
* replace defaultOptions with addOptions in docs
* refactoring
* refactoring
* drop object support for addOptions
* fix optional options
* fix tests
The commands toggleHardBreak(), toggleHorizontalRule(), toggleParagraph() do not exist.
Updating the documentation to reflect the existing commands setHardBreak(), setHorizontalRule(), setParagraph().