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Merge pull request #355 from nikhan/master

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Added a command line version flag to st binary
Merge pull request #356 from jacqui/master

Added a command line version flag to st binary
little clean up and some logging in the sqs block
Merge pull request #359 from mikedewar/sqsfix

little clean up and some logging in the sqs block
initial draft of a flip flop block
renamed flipflop to toggle
log messages in json to stdout (console) like we do in the ui
Merge pull request #361 from jacqui/master

log messages in json
simplify simplify http://bp1.blogger.com/_FBipdrn_n3g/RmC5jV4yo7I/AAAAAAAAABM/qCpYu6hkTiE/s1600-h/calvin.jpg
Merge pull request #360 from mikedewar/flipflop

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Don't log error when falling back to passing non-json data through in gethttp, fixed test
Merge branch 'master' of github.com:nytlabs/streamtools
Merge pull request #363 from jacqui/master

Test getHTTP block when endpoint is xml
a priority queue block
peek
caught little bug on null messages in the NSQ write
check for nil writer before trying to publish to it
added a nascent status endpoint, and time outs on the block manager's query