#1599 - Don't ignore nomultipart when storage is low
#1600 - #1602 - #1604 - #1617 - #1619 - #1620 - #1623 - #1624 - Fix POSIX compatibility issues found by pjdfstest
#1630 - Fail CheckBucket when S3 returns PermanentRedirect
#1640 - #1655 - Do not create zero-byte object when creating file
#1648 - Allow arbitrary size AWS secret keys
#1668 - #1678 - Fix race conditions
#1696 - Set explicit Content-Length: 0 when initiating MPU
#1681 - Set CURLOPT_UNRESTRICTED_AUTH when authenticating
#1723 - Add jitter to avoid thundering herd
#1728 - Loosen CheckBucket to check only the bucket
#1729 - Add support for AWS-style environment variables
Thanks @ambiknai, @CarstenGrohmann, @dolfinus, @hdima, @jstastny, and @moritazy for opening pull requests to improve s3fs!