message: Rename type TextChangedCallback to TextChangeCallback
diff: @@ -16,16 +16,16 @@ namespace NAS2D
  class TextControl : public Control
  {
  public:
  - using TextChangedCallback = NAS2D::Signal<TextControl*>;
  + using TextChangeCallback = NAS2D::Signal<TextControl*>;
  void text(const std::string& text);
  const std::string& text() const { return mText; }
  - TextChangedCallback& textChanged() { return mTextChanged; }
  + TextChangeCallback& textChanged() { return mTextChanged; }
  virtual void onTextChange() { mTextChanged(this); }
  protected:
  - TextChangedCallback mTextChanged;
  + TextChangeCallback mTextChanged;
  std::string mText; /**< Internal text string. */
  };
  