the progress of 0.2-incubating release

[Hyunsik Choi]

Hi folks,

There are only few issues scheduled to 0.2. For convenience, I've just
created a branch from the current master branch.

https://git-wip-us.apache.org/repos/asf?p=incubator-tajo.git;a=shortlog;h=refs/heads/branch-0.2

Cheers,
Hyunsik Choi