One of the best things you can do for the Julia community is to start using the release candidates of 0.3. Everyone will be better off if bugs are found now rather than when 0.3 is released. You can help make 0.3 a better release by installing one of the latest binaries and testing it out.
This is especially important for projects like DataFrames, which have fewer developer hours to spare on issues related to 0.2. — John
