0.3.2 release

[Alexkun]

What is the purpose of the change

0.3.2 release

Brief change log

(for example:)

• Added token verification for the upload interface
• Added parameter switches for the upload interface and args editing
• Added project-level configuration templates
• Added watermarks to pages
• Added a hook before stopping Flink applications
• Added application name filtering to operation logs

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes )
• Anything that affects deployment: (yes )
• The Core framework, i.e., JobManager, Server.: (yes )

Documentation

• Does this pull request introduce a new feature? (yes )
• If yes, how is the feature documented? (not documented)

[jefftlin]

LGTM!