Version 1.9.1

1.9.1 / 2017-03-14

• Add expires at to generate archive (#68)
• Add skip_transformation_name parameter to generate archive. (#67)
• Fix variables.
  • Fix variable regex.
  • Make Expression.serialize return normalized expression
  • Fix variable sorting.
  • Add tests for variable order.
• Avoid normalizing negative numbers.
• Normalize effect parameter
• Remove duplicate quality parameter line.