Merge pull request #1 from SamChien/master

get previous 30 days data
Merge pull request #2 from SamChien/master

add heat detect
fix an issue when no enough data in past 30 days
typo
Merge pull request #3 from SamChien/master

add heat score, thanks @SamChien
Merge pull request #4 from SamChien/master

support subset article segmentation, thanks @SamChien
fix a bug where assign lastId at incorrect position
few bugs fix
sqlite as default database
change url
Merge branch 'youchenlee'
add week display into keyword subset