v0.5.3

• Fix timestamp codec on 32-bit systems
• Allow any non-trivial Container to be passed as an array argument
• Fix pool connection failure when a password is present (#16)
• Various portability and robustness improvements

v0.5.2:

- More API is now properly documented; more examples.
- Pool.acquire() can now be used with 'async with'.
- create_pool() has a new argument - 'setup'.
- New Connection.add_listener() and Connection.remove_listener()
  methods.
- Record.__contains__.
- Bug fixes.