Version 0.7.0

• introduce a new Button Size percentage option and drop thickness margin in order to set the buttons size
• introduce Hidden State in order for the user to choose how buttons should behave when they should not be shown. Currently two states are supported: Slide out and Preserve Empty Space
• introduce a new Color Scheme based on current Plasma Theme used and make it also default
• live preview for changes in the settings window
• do not crash when the selected decoration does not exist in the systemm, for example it was uninstalled
• update buttons for scheme changes