2016.03.03 v0.5.0
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* We have a very basic frontend now.

2016.01.29 v0.4.0
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* Manage the crawl job.

2016.01.27 v0.3.0
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* Initialize the database with ease.

2016.01.26 v0.2.0
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* Support fetch and update package information.

2016.01.23 v0.1.0
=================

* The first draft demo that can works.

Add changlog: finish milestone v0.5.0
Add changlog: finish milestone v0.5.0

close #23
