catch snsapi version
only look at my own instance
support user defined input gap
display channel name

   Refs:
      * inline pre: http://stackoverflow.com/questions/5943607/inline-pre-formatting
extract and truncate url by js
include js directly; save one HTTP request
collapse text
regex upgrade; remove link expansion
catch snsapi version: twitter fix
support hooks
SQLite optimize: index for message digest
catch snsapi version
SQLite optimization: index for output latest message
add benchmark for ranked timeline
change feeds extension name