New API in pangomm 1.44

Member Pango::ATTR_ALLOW_BREAKS

Member Pango::ATTR_INSERT_HYPHENS

Member Pango::ATTR_SHOW

Member Pango::Font::has_char (gunichar wc) const

Member Pango::FontFamily::is_variable () const

Member Pango::FontMetrics::get_height () const

Member Pango::Layout::get_line_spacing () const

Member Pango::Layout::set_line_spacing (float factor)