Saving progress towards being able to select ignored columns.
Merge branch 'master' into ignore

Conflicts:
	bayesdb/client.py
	bayesdb/parser.py
Merge branch 'master' into ignore

Conflicts:
	bayesdb/engine.py
Resolved merge conflicts
Removed leftover merge conflict text and whitespace
Updated engine and client tests for update schema, especially ignore datatype
Merge branch 'ignore'
Merge branch 'master' into analyze