3.0.0

• Breaking: PopOptional() has been renamed to Pop() as an overload for the Queues
• Breaking: mpmc::Queue now enforces a power-of-2 size. This is necessary to prevent deadlocks on index overflows.
• Fixed an incorrect our_turn check in mpmc::Queue that caused
  incorrect behavior when monotonic push/pop counters wrapped around
• Fixed the push/pop count comparison condition in mpmc::Queue
• Replaced the two per-slot atomics (push_count/pop_count) in
  mpmc::Queue with a single access_count, reducing memory
  usage and contention per slot
• Added cacheline alignment for mpmc::Queue slots when
  LOCKFREE_CACHE_COHERENT is enabled, eliminating false sharing between adjacent slots
• Moved _write_wrapped and _read_wrapped flags in spsc::BipartiteBuf to share cachelines with their respective producer/consumer indexes, reducing cache contention
• Fixed spsc::RingBuf std::array overloads to use .data()
  instead of .begin(), returning a proper pointer rather than an iterator
• Ensured PriorityQueues must have at least 2 priorities