Cup

* [New] cup.net.get_interfaces - Get interfaces of a linux host
* [New] cup.res.linux.get_cpu_core_usage - Get cpu core usage
* [Enhancement] cup.shell.oper - Md5 hexdigest generation (py3 compatibility)
* [New] Py3 compatibility test and reconsutrction is undergoing
* [Enhancement] cup.shell.oper - Change subprocess.Pipe(shell=True by default to shell=False)
* [Bug] github socket closure (https://github.com/baidu/CUP/issues/32)

* [New] pip support (still needs pypi to authenticate, see github issue for details)
* [New] cup.storage.obj - Add ftp/s3/local storage support (with universal apis)
* [Bug] cup.net.localport_free - Reversely result returned
* [Bug] cup.net.async - Msg class class variable
* [Bug] cup.net.async - logging typo
* [Bug] cup.net.async - Msg disorder bug (an import bug fix!)
* [New] cup.net.async - Add get_context related class method
* [Bug] cup.decorators - fix wrap exception
* [Bug] cup.unittest - Fix bug for assert_lt
* [Bug] cup.res.linux - Add support for customized linux kernel
* [Enahcnement] cup.net.set_sock_keepalive_linux - add exception catch code lines
* [Enhancement] Use rtd (read_the_doc theme) to reconsutrct cup api-doc

* [New] cup.shell.is_proc_alive - Add optional to abandon vim|less|vi|tail|cat|more or custom filter
* [Bug] cup.shell.get_pid - Fix grep to surely abandon vim|less|vi|tail|cat|more
* [New] cup.log - Add support for stack manipulation, which can pop out function calls.
* [New] cup.err - Add UnImplemented exception class.
* [New] cup.exfile - Support temp files which will be removed immediately after the variable life ends.
* [Enhancement] cup.util.conf - support $ in a conf key
* [Doc] cup.shell - Fix doc bug.
* [New] cup.shell - Add grep support string with space
* [New] cup.storage.obj - Support common object storage apis including ftp, s3
* [Bug] cup.res.linux - Getting cpuinfo has bugs (new kernel 3.10)
* [Enhancement] - cup.util.threadpool, add daemon_threads as the parameter
that you can use to let the threadpool threads behave like daemon-thread
(when the main thread exits, it exits as well)
* [Enhancement] - cup.util.conf - support conf line "[.test] comments"