0.4
---

More general typing rules for delay, functions, and guarded recursion:

- delay and function definitions may now occur under a delay.
- Guarded recursive calls may occur at any time in the future -- not
  only exactly one time step into the future.
- As before, adv and recursive calls may only occur directly in the
  scope of delay. The scope of a delay is interrupted by adv, box,
  guarded recursive definitions, and function definitions.

Changes in the library:

- Rename applicative-style operators to avoid clash with Haskell's <*>
  operator.
- Rename types: Event -> Future; Events -> Event



0.3.1
-----

Guarded recursive types Str and Event are now fully strict (i.e. in
particular, they are strict in the component that is of a later type)
as they should be.

0.3
---

Rattus code is now checked just after GHC's type checking phase
(instead of after desugaring to Core). As a consequence, error
messages for some corner cases are much improved and we don't need
to use the -g2 compiler option anymore to get good error messages.

0.2
---

- the use of lazy data structures will now cause a warning (can be
  disabled by 'AllowLazyData' annotation); this check for lazy data is
  rather ad hoc and needs to be refined
- allow functions under ticks (but with limitations, see paper)
- strictness transformation is now similar to the 'Strict' language
  extension
- optimisations using custom rewrite rules

0.1.1.0
-------

- allow mutual guarded recursion
- improve type error messages

0.1.0.0
-------
initial release