Add pivot support
Use sanitize() instead of deepSanitize() as the former is guarded by an activation flag
Move package descriptions from HTML to package-info.java (keeping up with the times)
Fix Pivot adapter signatures with generics
Apply some code fixes as suggested by IDEA inspections
Add an overview page and more javadoc options to guide
Fix run task for JavaFX sample applications
Add some images for the sample apps
Update guide entry on sample application with JavaFX, Lanterna and Pivot descriptions