expr: Map.label short-circuits old map
Merge branch 'master' of github.com:ContinuumIO/blaze
expr: Expr.project used to simplify graphs

Classes like Column, Project, Merge can all project more intelligently
than by just wrapping around another Projection.
expr: py3 import unicode from compatibility
expr: merge.project(list-of-columns) fixed and tested
Merge branch 'master' of github.com:ContinuumIO/blaze
into: list <- numpy - better datetime handling

Nanosecond datetimes converted to datetime objects, not Longs
into: DataFrame <- CSV support datetimes with parse_dates
into: exhaustive test - add datetime support
into: exhaustive test with basic compute
into: exhaustive test - refactor data sources
into exhaustive: remove csv from base targets
mongo: tests skip if no mongo server running
python 3 compatibility
into: exclude into(nd.array, *) test with datetimes
Merge pull request #516 from mrocklin/expr-project

Small optimizations to expressions
Merge pull request #497 from mrocklin/into-persistent-test

Continue to test and improve `into`
typo
Merge branch 'master' into resource_csv

Conflicts:
	blaze/api/into.py
	blaze/api/tests/test_into.py
into: temporary files use .csv as suffix