v0.4.2

• clear/truncate_front now dispose chunks not occupied by readers immediately! Which, at least partially, solves "emergency cleanup" problem.
  Now you don't have to have access to all readers!
• Subscribe/unsubscribe now O(1).
• EventQueue::total_capacity now O(1).

v0.4.1

• miri support
• Using spin mutex everywhere. Write performance improved x2 in non-heavy concurrent cases.

v0.4.0

• Added spmc version
• EventQueue::subscribe -> EventReader::new

v0.3.1

• Improved read performance on long runs.

v0.3.0

• EventReader::iter now return LendingIterator.
• AUTO_CLEANUP -> CLEANUP{ ON_CHUNK_READ / ON_NEW_CHUNK / NEVER }

v0.2.0

• Chunks are dynamic sized.
• Double-buffering.

v0.1.0

First working implementation with fixed-sized chunks.