0.5.1 (Beta)

• Temporarily revert the new task metadata behavior: inline fields in sublists of tasks are added to the page, instead
  of the task. This behavior is not good, but is compatible with legacy usages of task metadata, which should uinbreak
  some existing queries.
  • This behavior will be removed in the future behind a flag.
• Added the 'visual' field to tasks - if set, tasks render 'visual' instead of their regular text.
• Fixed DataArray#mutate().