refactor to use unified tracker
Merge pull request #15 from tianzhongbo/dpark:master

refactor to use unified tracker
hotfix
add mutable_dict and improve broadcast serialize
add completion for dquery
add mutable_dict example
add Numba jit support
Merge pull request #18 from tianzhongbo/dpark:master

add Numba jit support
add autojit
Merge pull request #19 from tianzhongbo/dpark:master

add autojit
fix divide zero error
Merge pull request #20 from tianzhongbo/dpark:master

fix divide zero error
hotfix
Merge branch 'master' of http://code.dapps.douban.com/dpark
Merge pull request #21 from tianzhongbo/dpark:master

hotfix
fix test
add unittest for old RDD.update
support real RDD.update
fix bug: RDD.update on None values
RDD.update: using cogroup instead of union(other).reduceByKey