CHANGES IN VERSION 0.1.0
------------------------
 o geom_hexagon, geom_pkgname, theme_sticker <2017-03-21, Tue>
 o use ggimage::geom_subview and ggimage::geom_image <2017-03-21, Tue>

CHANGES IN VERSION 0.0.2
------------------------
 o support select font typeface <2017-03-15, Wed>
   + https://github.com/GuangchuangYu/hexSticker/issues/4
 o move package name to top layer <2017-03-14, Tue>
   + https://github.com/GuangchuangYu/hexSticker/issues/3

CHANGES IN VERSION 0.0.1
------------------------
 o initial version based on my script to generate ggtree sticker <2017-03-13, Mon>
   + https://github.com/jotsetung/BioC-stickers/blob/master/ggtree/ggtree_sticker.R