delete tag storage
Merge branch 'master' of https://github.com/cs2103aug2014-w13-4j/main into storage-improvement-chuyu
remove getIntervalTree method
refactor update operation
improve search by name
fix near match search
Merge branch 'master' of https://github.com/cs2103aug2014-w13-4j/main into storage-improvement-chuyu
Merge branch 'pn-fix-near-match' of https://github.com/cs2103aug2014-w13-4j/main into storage-improvement-chuyu
Merge branch 'master' of https://github.com/cs2103aug2014-w13-4j/main into storage-improvement-chuyu
code improvement
add comments for the code
Merge remote-tracking branch 'origin/storage-improvement-chuyu'