message: TerminalView: allow negative margins
diff: @@ -112,8 +112,8 @@ class TerminalView {
  void setDynamicColor(DynamicColorName _name, RGBColor const& value);
  struct WindowMargin {
  - unsigned left;
  - unsigned bottom;
  + int left;
  + int bottom;
  };
  WindowMargin computeMargin(WindowSize const& ws, unsigned _width, unsigned _height) const noexcept;
  