KDDockWidgets 1.2.1

Highlights of the 1.2.1 Release

• Support for resizing dock widgets when they are in overlay/popup mode (autohide/sidebar feature)
• Fixed title bar close button enabled state not being restored with Layout saver (#137)
• Installs a version header (kddockwidgets_version.h) that defines a version string and other useful versioning macros (#138)
• DockWidgetBase::eventFilter() is protected instead of private (regression vs v1.1) (#148)
  It's recommended that you rebuild your application when updating KDDW, as MSVC encodes private/protected in the name mangling.
• Fixed WASM build on Windows (#163)
• Fixed sidebar overlay not getting hidden when clicking on the main window docking area (#157)