token based authentication caching
Merge branch 'auth-token-cache' of https://github.com/giteshnandre/cosbench into giteshnandre-auth-token-cache
Merge branch 'giteshnandre-auth-token-cache' into 0.4.0.0
abort http connection before connection manager shut down
Revert "fix a typo"

This reverts commit 68c3943ff14390e9660d214dfb9a8cf42b925e5e.
Merge branch '0.4.0.0' of https://github.com/intel-cloud/cosbench into 0.4.0.0
Revert "share one method in one client"

This reverts commit 2a24a470228e7c28d763212cbc326d0f0b93bdd3.
fix a typo
update document to version 2.8.3
update TODO list
update to v0.4.0 final
Merge pull request #184 from intel-cloud/0.4.0.0

merge 0.4.0.0 back to master