Adding support for tuple types (e.g. [number, string])
Addressing CR feedback, adding baselines.
Addressing CR feedback.
Adding error message for empty tuple types.
Accepting new baselines.
Merge branch 'master' into tupleTypes

Conflicts:
	tests/baselines/reference/typeName1.errors.txt
Accepting new baselines after merge.
Contextual typing of array literals is now based on the presence or absence
of numerically named properties and doesn't directly test for tuple types.
Merge branch 'master' into tupleTypes
Merge branch 'master' into tupleTypes
Merge pull request #428 from Microsoft/tupleTypes

Adding support for tuple types (e.g. [number, string])