1.18.5

• Add global hotkey support. It can be activated from Preferences->Advanced->Global hotkeys. Only hotkeys with modifiers (e.g. Alt+T), function keys (except for F12) and numpad keys can be used as global hotkeys. (#53)
• Add a hotkey for minimizing/restoring the main window
• Replace the "hide all buttons" option with "hide all buttons when mouse is not over the title bar" option
• Some other minor bug fixes and enhancements