v1.5.0

New:

• Added new io.input.slider IO method to request a number with a range slider control.
• Added new io.display.html method to display rendered HTML to the user.
• Added user.role and user.teams properties to ctx for the current user running the action or viewing the page.
• Added warnOnClose property to the action definition, set to false to suppress the default behavior of warning the user when leaving or restarting an in-progress transaction.