0.8.4

Chore

• Update pyo3 to the latest version (#938) ([cc7d9d3]cc7d9d3))
• update dependencies (#953) (bca8770f)
• tag 0.8.3 (#937) (02b76231)

Features

• default to timing out deadpool checkouts (30 seconds) (#974) (2ecca202, closes #973)
• avoid an unnecessarily cloning for from_raw_bso (#972) (07352b6d, closes #971)