Bug 1662682

v3.7.2
- Backspace deletes last character in tray menu search instead of clearing it
  completely
- Window title shows "<ITEMS>" label when non-text items are copied
- Command dialog uses simpler layout for easier command editing
- Command dialog shows simple command description
- Remove empty lines at the end of copied and exported commands
- New script functions to calculate hash: md5sum, sha1sum, sha256sum, sha512sum
- Retrieving clipboard data is interrupted if it's slow
- Editing commands no longer causes high CPU usage
- Completion menu for command editor is resized once
- Items are rendered faster and are shown with incorrect size initially while
  scrolling instead of showing empty items
- When Action dialog opens, the command editor is focused instead of the combo
  box containing command history (this consistent with default focus behavior
  on OS X)
- Clipboard monitor process loads configuration only at start
- Autostart option now works in the Flatpak package
- OSX: Application no longer crashes when using the main window close button
- X11: TIMESTAMP clipboard format is used to avoid retrieving unchanged content
  unnecessarily
- X11: Data installation path can be overridden with CMake options
  (CMAKE_INSTALL_DATAROOTDIR and DATA_INSTALL_PREFIX)
- X11: Store current window title with new clipboard data right after
clipboard-change signal is received