v0.0.9

Added

• InPlaceWrite trait to re-initialize already existing allocations,
• assert_pinned! macro to check if a field is marked with #[pin],
• compatibility with stable Rust, thanks a lot to @bonzini! #24 and #23:
  • the alloc feature enables support for allocator_api and reflects the old behavior, if it is
    disabled, then infallible allocations are assumed (just like the standard library does).

Fixed

• guard hygiene wrt constants in [try_][pin_]init!

Full changes: v0.0.8...v0.0.9