v15.05

• Add Distort option to Size and Position filter.
• Add video Cut option to Transition Properties.
• Code-sign Windows executable and installer.
• In Timeline, operate on clip under the play head if nothing is selected.
• New keyboard shortcuts for Timeline:
  • Select clip under play head: Ctrl+Space.
  • Move selection one item to the right/left: Ctrl+Right/Left.
  • Blanks can be selected to remove/ripple-delete: X or Shift+Del or Shift+Backspace.
  • Deselect everything: Ctrl+D.
  • Open As Clip: Enter/Return.