Prepare 0.6.1 release
Prepare 0.6.1 release

biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax,biletskyy/flatwhite-syntax