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)
Adding my public key.
DRILL-1505: Updating Session Value Doesn't Reflect In 'sys.options' Query Output
DRILL-1494: Fix annoying and unnecessary warning 'Failure while trying to load .drill file'
DRILL-1495: Test cases should log relevant message in case of expected failures
DRILL-1485: tools/verify_release.sh does not have execute permission bit set
DRILL-1409: DbVisualizer fails to connect to Drill using embedded jdbc driver
DRILL-1497: Fix test failure in o.a.drill.jdbc.test.TestMetadataDDL
DRILL-1490: Upgrade to ProGaurd 5.0
DRILL-1493: Upgrade ASM to 5.0
DRILL-1492: Update readme with supported versions of Java

* Keeping the supported Java version to 7 until we get all issues around Java 8 resolved.
DRILL-1516: When searching for the java executable, ignore directories named "java"
PigParser - Initial work

Pig Parser firefighting

Pig Parsing Firefighting: Downgrading Sqlline to 1.0.9 to get Jline 1.0 back (which is compatible with Pig)

Pig Parser plan fixes, Addition of Limot OPerator, Pig Logical Plan access regulation, Removal of newline dependency while providing pig script on web console

Add support for JOIN. Only suppports named col joins for now.

New compiled protobuf files

Pig Parsing: Supporting Join OP

Join Op Tweaks
Pig Parsing: Handled unterminated DAG branches, Support for UNION, DISTINCT