=== 1.6.40 / 2018-12-28 * Fix some library classes which failed, when Fox was not included into the global namespace. * Add new accessor FXImage#dataPtr to access raw image data from FFI, Fiddle or OpenGL. * Ensure zero terminated strings in values of C-argv. * Remove various Ruby and C++ warnings. * Update libfox to 1.6.57. * Add support for RubyInstaller-2.6 * Set minimum required ruby version to 2.2