emojifont 0.5.3

• update docs, now phylomoji is documented on https://yulab-smu.top/treedata-book/chapter8.html#phylomoji.

emojifont 0.5.2

• mv phylomoji vignette to http://yulab-smu.top/treedata-book/chapter8.html#phylomoji (2018-05-23, Wed)