init base
add downloadingprogress save dir. and version for 0.4.0

Signed-off-by: EdenLee <checkway@outlook.com>
version 0.4.0
move microlog.properties location.
重新调整工程结构, 分离第三方项目

Signed-off-by: EdenLee <checkway@outlook.com>
fixed download url as parameters url.
fixed a latence bug in logger and baseActivity may cause program crash.
version droidUtil 0.4.2, fixed copy bug.
added file copy method.
version 0.4.3, fixed download to signal.
version 0.4.3 exported.
add detail exception.
fixed no message display.
add new queue for priority.
version for 0.4.5, add download speed limit.
version for 0.4.5, add download speed limit.
bug fix
add no content-length head download. add base adapter holder support.
added some new APIs.
remove some add new downloadItem method. modify speed limit to supply multi-thread speed limit.