v0.18.0

Changes

• support protocol version 0.12
  (by @fmoor in 5ce52ed)

• Update to protocol version 0.13
  (by @1st1 in c690250, 8by @fmoor in 5ce52ed, by @jaclarke in a5a6218 for #253)

• Lookup edgedb.toml recursively in parent directories
  (by @fmoor in d9a12b8 for #245)

• Update connection parameter resolution
  (by @jaclarke in 085f574 for #241)

• Implement EDGEDB_CLIENT_SECURITY
  (by @fmoor in ac46c37)

• Add optional/required query_single* methods + rename retrying_transaction + update pool to create_client API
  (by @jaclarke in f2ae0d0 for #249)

Deprecations

• Deprecate Pool.acquire() and Pool.release()
  (by @fmoor in 2d501e9 for #217)

• Rename tls_verify_hostname to tls_security
  (by @fmoor in 2086b86)

Fixes

• Do not attempt to del transport in connection_lost if it has been already
  (by @elprans in c719e79 for #215)

• Retry if start() raises a retryable error (#228)
  (by @fantix in ffaae01 for #228)

• Fix broken pool connection cleanup
  (by @fantix in be44959 for #222)

• Fix deprecated usage of SSLContext (#231)
  (by @elprans in f73f999 for #231)

• Bugfix: _borrowed_for is now set entering a transaction (#233)
  (by @fantix in bf763d1 for #233)

• Send zero arguments as zero-length bytes in proto 0.12 (#238)
  (by @tailhook in f51dd51 for #238)

• Fix retrying_transaction() on network errors
  (by @fmoor in cc001e6)

• Fix connection and retry options on AsyncIOPool (#237)
  (by @tailhook in 44e279f for #237)

• Auto retry read-only queries outside transactions (#243)
  (by @fmoor in 76bb586 for #243)

• Fix credentials_file argument typo on async_connect (#252)
  (by @mkniewallner in b21b70a for #252)