v1.9.0

Fixes

• Fix globals in nested modules (#474)
  (by @msullivan in ff08d9d for #474)

• Support passing dicts and namedtuples for namedtuple arguments (#473)
  (by @msullivan in 60da99a for #374)

• Expose the error details field. (#479)
  (by @vpetrovykh in 113ed0d for #472)