Updating projects version to 0.7.0-incubating-SNAPSHOT.

The following pull requests have been either been merged or closed as of this release.

closes #1  (via 207f2e4)
closes #3  (*No longer relevant*)
closes #8  (via cb3132a)
closes #11 (via 727adb7, a73512d)
closes #12 (*Issue fixed via DRILL-88*)
closes #13 (*Closed as Won't Fix*)
closes #14 (via f0be80d)
closes #17 (via a38856c)
closes #35 (via 741aab0)
closes #60 (via 1648195)
closes #64 (Resolved as part of other function merges)
closes #65 (via 28dd76a)
closes #66 (via 4862b2b)
closes #67 (via 2ca9c90)
Setting to SNAPSHOT version, (missed while collecting the stale PRs)
DRILL-1504: Enabling fragment memory limit causes out of memory