screenkey 1.5

- New LockScreen detection from Marc Lavallée prevents passwords from
  being shown right after unlocking the screen when possible (new
  ``dbus`` dependency required).
- Keypad number keys are now displayed correctly (thanks to @Gordin508).
- Additional mouse buttons are now shown as "M[x]" instead of being
  incorrectly displayed as Ctrl/Alt modifiers (@Gordin508).
- The new ``--window`` command line flag allows to display screenkey as
  a regular window instead of an overlay. This can be useful for
  recording screenkey as an independent overlay during screencasts
  and/or to manage the window position through the window manager.
- New German translation thanks to Maik Schmalle.
- Fix regression that would keep the overlay visible when using Ctrl
  sequences with the mouse visualization disabled.
- Fix regression causing a backtrace instead of a proper error message
  during initialization errors.
- Fix crash happening due to screen size and/or resolution changes while
  screenkey is running.
- Prettify JSON configuration file (thanks to Mehrad Mahmoudian).