Fixed build instructions (MLDB-2184)

bump pymldb

Merge tag 'v2016.12.16.0' into release_latest

Conflicts:
	container_files/demos/Transfer Learning with Tensorflow.ipynb
	mongodb/doc/MongoDataset.md
	mongodb/doc/MongoImport.md
	mongodb/doc/MongoQueryFunction.md
	mongodb/doc/MongoRecord.md

Merge remote-tracking branch 'origin/mongodb_doc_update' into release…

…_candidate

Postgres plugin marked experimental

Updated query tutorial

Mldb 1879 stddev variance (#591)

* [MLDB-1879] Fixed variance/stddev in sql
* [MDLB-1879] Updated titanic notebook to reflect fix in stddev
* [MDLB-1879] PR comments

MLDB-1792 enh aggregator args count err messages

Added memory warning in panama papers notebook demo

Json where filter