post release version bump to 0.3.0dev0 (#525)

Summary:
Update release version to dev.

Pull Request resolved: #525

Reviewed By: d4l3k

Differential Revision: D37195921

Pulled By: kurman

fbshipit-source-id: 424bb1cb99c1137690a787d141d252c23eb54163

Author: kurman

torchx/version.py

@@ -14,7 +14,7 @@
 # 0.1.0bN  # Beta release
 # 0.1.0rcN  # Release Candidate
 # 0.1.0  # Final release
-__version__ = "0.2.0"
+__version__ = "0.3.0dev0"
 
 # Use the github container registry images corresponding to the current package
 # version.