[NTG-context] cikada, a presentation tool

Hi, I write a presentation tool for PDF documents based clutter and poppler. welcome to try it. the english manual, see https://github.com/liyanrui/cikada/blob/master/doc/cikada-manual-en.pdf the project page: https://github.com/liyanrui/cikada -- Best regards, Li Yanrui (李延瑞)