#2409 - Fixed a bug that mounting with ksmid specified to fail
#2404 - Fixed ordering problem between fdatasync and flush
#2399 - Fixed ListBucket/IAM edge cases
#2376 - Corrected list_bucket to search in stat cache during creating new file
#2369 - Make dir size 4096 not 0
#2351 - Added option free_space_ratio to control cache size
#2325 - Fixed a bug upload boundary calculation in StreamUpload
#2298 - Abort MPU when MPU fails to avoid litter
#2261 - Use explicit ownership for memory
#2179 - Require C++11

Thanks @adamqqqplay, @eryugey, @iainelder, @jmcarpenter2, and @jstastny for opening pull requests to improve s3fs!