0.2.5

Yanked release: Do not use. Turned out to contain critical regressions.

• Rewrite of PII stripping logic. This brings potentially breaking changes to
  the semantics of PII configs. Most importantly field types such as
  "freeform" and "databag" are gone, right now there is only "container"
  and "text". All old field types should have become an alias for "text",
  but take extra care in ensuring your PII rules still work.

• store: Minor fixes to be closer to Python.