Fix version on master branch #589

Expected Behavior

The master branch version should be pointed at 0.5-SNAPSHOT

Current Behavior

The master branch version is set as 0.4.2-SNAPSHOT

https://github.com/gojek/feast/blob/master/pom.xml#L39

Possible Solution

• Short term: Just update it. Also update any other version occurrences in code
• Long term: Consider updating the code standards workflow to prevent old versions from being reused on the master branch.