release 0.5.0

Merge pull request cloudwu#135 from cloudwu/dev

release v0.4.2

Merge pull request cloudwu#130 from cloudwu/dev

Dev

release v0.4.0

update history, and release v0.3.2

Merge pull request cloudwu#119 from cloudwu/dev

release v0.3.1

update history

Merge pull request cloudwu#113 from cloudwu/dev

bugfix

update history and release v0.2.0

remove malloc hook when disable jemalloc