Removed color from release badge because orange is used for releases …

…< 1.0

Fix various typos (#692)

* Fix various typos
Found via `codespell -q 3 -L te,ridiculus,varius`

* Add another typo fix

Fixed #642 - The floating window can not back to normal size after ma…

…ximizing it

Ensure that TabWidget was not deleted by using it as context object (#…

…612)

Co-authored-by: Marcus Venturi <[email protected]>

Added documentation for new "ShowTabTextOnlyForActiveTab" config flag

Updated documentation

Removed unimolemented superfluous function definitions

Added missing README images

Updated cmake build for demo to use quick and quickwidgets

An additional fix for #496 Nonfloatable hidden window disappears on d…

…rop in empty area