Merge pull request swooletw#304 from swooletw/develop

fix pids in isRunning

Merge pull request swooletw#302 from swooletw/develop

1. improve onHandShake callback
2. make pid file compatible with older versions

Merge pull request swooletw#283 from swooletw/develop

Develop

Merge pull request swooletw#261 from swooletw/develop

Develop

Merge pull request swooletw#243 from swooletw/develop

Develop

Merge pull request swooletw#239 from swooletw/develop

Develop

Merge pull request swooletw#236 from swooletw/develop

Develop

Merge pull request swooletw#233 from swooletw/develop

Develop

Merge pull request swooletw#230 from swooletw/develop

Develop

Merge pull request swooletw#206 from swooletw/develop

Remove some unnecessary dependencies