4.19.2 - build: Bump requirements for Xfce 4.20 - Apply .clang-format file - Sort includes - tumbler: Add missing include guards - clang-format: Add file - plugins: Do not use g_file_is_native() to check for a valid path - gepub-thumbnailer: Emit error signal if file location is unsupported - gepub-thumbnailer: Fix create_from_mime() - gcc-analyzer: Fix -Wanalyzer-fd-leak - scan-build: Add false positive file - build: Use AM_DISTCHECK_CONFIGURE_FLAGS - xdg-cache: Fix and optimize xdg_cache_cache_is_thumbnail() - Do not use g_log_set_always_fatal() - Translation Updates: Polish