Fixed when sub event neer now, event out of line.
Add memtion support. #6
Add hashtag support. #6
Fixed @memtion and #hashtag parse, and add example for test. #6
Fixed sub-meta data config support
Update hashtag style.
Fixed hashtag meta data parse, support rgb color
Fixed highlight style for mouse hover
Update readme for meta doc
fixed #10, rendering bugs in google chrome, but not good enough.
Merge for hashtag and memtion support.