Adding geo-based map queries
Fix tests that assumes time diff is in microseconds.
Fixed AddrWalker's unwrap sequence logic.
Merge pull request #234 from mpark/fix-addr-walker

Fixed AddrWalker's unwrap sequence logic.
Merge pull request #224 from jmlvanre/twitter_live

Adding geo-based map queries
Merge pull request #230 from mpark/fix-time-diff

Fix tests that assumes time diff is in microseconds.
Remove the last member AsStr function!
Catch exceptions at a higher level in the websockets interface.
Return a JSON object rather than a JSON encoded string.
Merge pull request #235 from mpark/fix-compile-stmt

Fix compile stmt